Judgments

Decision Information

Decision Content

S. Thomas, D. Frost and D. Carlson (Applicants)
v.
Attorney General of Canada (Respondent)
Court of Appeal, Jackett C.J., Thurlow J. and Smith D.J.—Toronto, February 22, 23 and 24; Ottawa, February 24, 1972.
Public Service—Judicial review—Public Service Staff Relations Board, jurisdiction of—Collective agreement by postal employees and government—Assignment of postal routes to letter carriers—Right to employ casual help on unmanned routes—Interpretation of contract—Decision of adjudicator reversed by Board—Review by Federal Court— Public Service Staff Relations Act, R.S.C. 1970, c. P-35, s. 23—Federal Court Act, s. 28.
A collective agreement between a union of postal employees and the Government of Canada made pursuant to the Public Service Staff Relations Act provided, inter alia, for the assignment of letter carriers' routes to supervisory letter carriers in the formers' absence, but made no provi sion for an insufficiency of supervisory letter carriers. Three letter carriers presented grievances contending that the employer violated the agreement by using casual employees on letter carrier routes temporarily unmanned because of the illness of the regular carriers, instead of using other letter carriers at overtime after performance of their day's work on other routes. The grievances were upheld by the adjudicator, but rejected by the Public Ser vice Staff Relations Board, to whom the employer referred the matter under section 23 of the Act, which provides for a reference to the Board of "any question of law or jurisdic tion" that "arises in connection with a matter that has been referred to ... an adjudicator pursuant to this Act". The letter carriers applied under section 28 of the Federal Court Act to set aside the Board's decision.
Held, the application must be dismissed. Nothing in the collective agreement gave a postal employee a right to have some part of the postal service work delayed so that he could be given an opportunity of doing it after completing his own work.
Held also, the Public Service Staff Relations Board has unqualified jurisdiction under section 23 of the Public Ser vice Staff Relations Act to determine any question of law, which includes the interpretation of a contract, that arises in connection with a matter referred to an adjudicator under the Act.
APPLICATION for judicial review of a deci sion of the Public Service Staff Relations Board.
W. Z. Estey, Q.C. and M. L. Levinson for applicants.
C. R. O. Munro, Q.C. and P. Y. Delage for respondent.
JACKETT C.J. (orally)—This is an application to the Federal Court of Appeal under section 28 of the Federal Court Act to review and set aside a decision of the Public Service Staff Relations Board dated January 7, 1972, setting aside a decision of Adjudicator H. Arthurs dated Octo- ber 9, 1971, on grievances presented by the applicants.
The decisions in question were made under the Public Service Staff Relations Act, which was first enacted as chapter 72 of the Statutes of Canada of 1966-67 and, since July 15, 1971, is chapter P-35 of the Revised Statutes of 1970.
The Public Service Staff Relations Act pro vides for collective bargaining between employees in the Public Service of Canada and the Government of Canada as tl.eir employer. The first 89 sections of the Act are largely concerned with certain basic rights and prohibi tions and with establishing machinery for achieving collective agreements or arbitral awards concerning conditions of employment and related matters. In this legislative scheme, a central position is occupied by a board known as the Public Service Staff Relations Board, which Board is charged with the general administration of the Act as well as various important, specific duties. In addition, there is a tribunal called the Public Service Arbitration Tribunal which functions in certain cases where the statute contemplates arbitration when col lective bargaining has not resulted in a collec tive agreement. Part IV of the Public Service Staff Relations Act, which is entitled "Griev- ances", provides a procedure for the presenta tion of a "grievance" where an employee feels himself aggrieved by, among other things, "the interpretation or application in respect of him of ... a provision of a collective agreement ...". (Section 90(1)). In addition, where a grievance has not been dealt with to the satisfaction of the
employee who presented it, Part IV authorizes him to "refer the grievance to adjudication". (Section 91(1)). Such a grievance is referred to a board of adjudication or to an "Adjudicator". (Section 94).
A collective agreement was entered into on October 16, 1970 between The Council of Postal Unions and the Government of Canada concerning the postal employees covered by a bargaining certificate. (Articles 3.01 and 3.02). By its terms, this collective agreement applies to letter carriers as well as certain other postal employees. The agreement provides in some detail for the grievance procedure contemplated by the statute and provides for a grievance being referred to "adjudication" (Article 9.25), although it does not provide any machinery for such an adjudication. The agreement also con tains detailed provisions concerning many sub jects, including seniority, assignment of work, hours of work, overtime, holidays, vacations.
Before referring to the "grievances" of the applicants, by which the proceedings here in question were commenced, it is advisable to refer to certain of the provisions of the collec tive agreement that are applicable to letter carri ers. Some acquaintanceship with such provi sions is necessary in order to have any appreciation of what the "grievances" actually claim the applicants are entitled to.
The first part of Article 10 of the collective agreement deals with seniority among letter car riers. Here it becomes apparent that there are two groups of letter carriers, viz, letter carriers so-called, and a more senior group called "Su- pervisory (Relief) Letter Carriers" who are paid at higher rates and who have "vacation relief, or sick relief duties". Article 10 provides (10.01 and 10.02) rules for determining seniority within each group according to dates of appointment and says (10.03) that seniority shall be used "to accommodate employee pref erence" as follows:
(a) selection of assignments in accordance with articles 13, 14 and 15,
(b) choice of vacation periods in accordance with article 21, clauses 21.14 and 21.15, and
(c) selection of replacements for letter carri ers granted leave of absence for 15 days or more.
Articles 13, 14 and 15 contain detailed rules for assignment of "walks" to ordinary letter carri ers and "blocks of walks" to Supervisory (Relief) Letter Carriers in accordance with seni ority. Article 21 (21.14 and 21.15) provides rules for allocating vacation leave on the basis of seniority. Article 10 itself (10.04) contains the rules for selection of "replacements" for letter carriers who have been granted leaves of absence. The first such rule is that, for "ab- sences" of less than 15 days, the employer "shall assign" available Supervisory (Relief) Letter Carriers. The second is that for "author- ized absences" of 15 days to 2 months and 15 days (other than vacations), Supervisory (Relief) Letter Carriers who have not selected assignment to vacation leave "shall be offered" the assignment on the basis of seniority. The third is that, for "authorized absences" in excess of two months and 15 days, the assign ments "shall be made" first to "unassigned letter carriers in order of seniority", second to "available Supervisory (Relief) Letter Carri ers," and thirdly "by other means". The fourth and final rule on this subject of "replacements" is that, for vacation leaves of 15 days or more, Supervisory (Relief) Letter Carriers performing vacation relief duties "shall select assignments" on the basis of seniority.
[At this point, it may be helpful to attempt to summarize the situation dealt with by the provi sions to which I have just referred as it appears to me. The work of mail delivery is organized into "walks", each of which is assigned, pre sumably on an indefinite basis, to a letter carri er. Vacation and sick relief work is performed by Supervisory (Relief) Letter Carriers and for this purpose the "walks" are grouped into "blocks of walks", each of which is assigned to
a Supervisory (Relief) Letter Carrier. Normally, therefore, every walk being assigned and every block of walks being assigned, there will be a letter carrier at all times to carry the mail on every walk, being the letter carrier to whom it was assigned or a Supervisory (Relief) Letter Carrier in whose block of walks it lies, depend ing on whether that letter carrier is on duty or is on vacation or sick leave. However, there can be circumstances for which this fundamental arrangement is not adequate and so Article 10 (10.04) contains special rules for extraordinary circumstances. Generally speaking, the Article 10 rules seem to require that
(a) for absences of any kind that are less than 15 days,
(b) for all vacation leave absences, and
(c) for any authorized absence up to two months and 15 days,
replacements shall be supplied from Superviso ry (Relief) Letter Carriers and those rules make no provision for what is to be done about replacements when there are not sufficient available Supervisory (Relief) Letter Carriers to cover all requirements. On the other hand, where there are authorized absences other than for vacation leave of more than two months and 15 days, assignments must be made in the first instance to "unassigned letter carriers" in order of seniority and then to "available Supervisory (Relief) Letter Carriers" and, if those services are exhausted, assignments are to be made "by other means".]
Following the provisions dealing specifically with the allocation of work in accordance with seniority, we find an Article dealing with normal hours of work (Article 16) and an article dealing with premium payments for overtime (Article 17). The fundamental rule is that the normal work week is 5 days per week of 8 hours per day (16.01(a)) and that "overtime" shall be paid at the rate of time and one-half for all hours worked in excess of 8 hours per day. When "overtime" is required because there is more work to be done than can be done in normal hours, it is governed, in the case of a letter carrier route (walk), by Article 17.06, which says that "Insofar as practicable, over-
time on a letter carrier route will be performed by the Letter Carrier or Supervisory (Relief) Letter Carrier assigned to that particular route. Article 17.07 provides a rule, which is not appli cable to letter carriers, "For the purpose of equalizing opportunity to perform required overtime work". Briefly, this is a requirement for offering the opportunity to perform over time work "Where less than a full complement of employees is required to work overtime" according to a rule that is designed to make sure that there is equal opportunity to take it. Finally we come to the particular article (Article 19) that gives rise to the controversy here. Article 19 deals with three things. First, it provides that an employee shall be paid time and a half for all hours worked on his day of rest. Second, it provides, by Article 19.02(a), that an employee called back to work, after having completed his scheduled hours of work for that day and having left the employer's premises, will receive a minimum of 3 hours of "work or pay in lieu of work" at time and a half. Finally, Article 19 has a special rule regarding "Unmanned letter carri er routes", which is broken into two parts. The first part (Article 19.03(a)) deals with the period until November 29, 1970, and says that "Where a letter carrier or Supervisory (Relief) Letter Carrier performs work on another route after completion of duties on his assigned route", the minimum guarantee provided in 19.02(a) will apply (i.e., 3 hours of "work or pay in lieu of work" at time and a half). The second part deals with November 30, 1970 and later. It provides (a) that coverage of unmanned letter carrier routes will be subject to the principal overtime provision (17.01) which provides for time and a half for hours worked in excess of 8 hours per day, and (b) that "Insofar as possible, where letter carriers or Supervisory (Relief) Letter Carriers are required to perform overtime work to cover unmanned letter carrier routes, such overtime will be allocated in accordance with the principle of equal opportunity as provided in clause 17.07".
I come now to the grievances of the applicants.
The three applicants all prepared their origi nal grievances on February 26, 1971. Mr. Tho- mas's statement of his grievance reads as follows:
I grieve that the employer violates Articles 19:03 b & 17 and other relevant articles of the contract, When on 22, 23, 24, 25 & 26/2/71 he used casual help to deliver Unmanned Walks and did not follow the overtime list as called for in the contract to cover Unmanned Walks.
I request that I be paid as the Senior Qualified Volunteer who was willing to work overtime on the Unmanned Walk on the day in question for all hours worked by the casual employee.
Mr. Frost's statement of his grievance and Mr. Carlson's statement of his grievance were iden tical except for changes in particulars of time.
The employer's decision on March 3, 1971, was the same in each case. It reads:
There is no provision in the Collective Agreement that provides for the delay of delivery of mail in order that employees be afforded the opportunity of working overtime.
Your grievance is therefore denied.
On April 1, 1971, there was a decision in each case at the second level. It reads:
Representation has been made on your behalf by the Letter Carriers Union of Canada.
Departmental policy was followed in the employment of casual help to cover unmanned Letter Carrier walks. There is no provision in the Collective Agreement which would require that the Postal Service be delayed in order to provide overtime work for employees who have already performed a day's work. There was no violation of the current C.P.U. Agreement.
Your grievance is denied.
A decision at the third stage was given in each case on April 26, 1971, reading as follows:
Your grievance has been reviewed and the case was dis cussed with an official of your Union.
There is no provision in the Collective Agreement which would give priority to the use of overtime to cover a walk which was vacant on a given day. Casual employees were
employed in order to avoid a delay in the delivery of mail on the day in question.
For these reasons, your grievance is denied.
The fourth stage was decided in each case on May 26, 1971, as follows:
Your grievance has been reviewed and the matter discussed with a representative of the Letter Carriers' Union of Canada.
The action taken to cover unmanned letter carrier walks was taken to ensure delivery of mail and did not constitute an violation of the collective agreement, therefore your grievance is denied.
On June 4, 1971, each of the applicants signed a Notice of Reference to Adjudication.
On October 15, 1971, the Adjudicator heard the parties but this Court has no information as to what facts, if any, were established before him.
The Adjudicator delivered his decision on October 19, 1971. He stated that the union claimed that the employer had violated the col lective agreement by assigning "Casual" employees to deliver mail on walks left unmanned •due to the illness of regular letter carriers and that, in the union's view, such work should have been assigned to letter carriers or Supervisory (Relief) Letter Carriers "upon completion of their own routes, at overtime rates". In the particular cases before him, it was "conceded" that no Supervisory (Relief) Letter Carriers were available for assignment to the "unmanned" routes. The claim, he said, was founded on Article 19.03(b), which reads:
(b) Effective 30th November 1970, coverage of Unmanned Letter Carrier routes will be subject to the overtime provision in clause 17.01. Insofar as possible, where Letter Carriers or Supervisory (Relief) Letter Car riers are required to perform overtime work to cover unmanned letter carrier routes, such overtime will be allocated in accordance with the principle of equal oppor tunity as provided in clause 17.07.
In the Adjudicator's opinion, this language, on its face, was "conclusive in favour of the union" subject to the argument of the employer that Article 19.03(b) merely provides a method of calculating payment "in the event that the employer should choose to require the perform-
ance of overtime work". After considering vari ous provisions in the Collective Agreement, he decided "that the employer violated the agree ment by failing to assign the available work to bargaining unit personnel, albeit on an overtime basis". The Adjudicator concluded his decision by saying that "It was assumed throughout the hearing (although not expressly proven) that had the provisions of Article 19.03(b) been adhered to, the grievors would have been assigned to unmanned walks, and would have received overtime pay for performing such work." and by ordering that they be compensat ed for any income lost by them as a result of the employer's improper use of casuals.
Following that decision, there was a refer ence under section 23 of the Public Service Staff Relations Act, which reads, insofar as applicable, as follows:
23. Where any question of law or jurisdiction arises in connection with a matter that has been referred to ... an adjudicator pursuant to this Act, ... either of the parties may refer the question to the Board for hearing or determi nation ...
Pursuant to that section, the employer referred certain questions to the Board for determina tion. The Reasons for Decision of the Public Service Staff Relations Board in connection with this reference are dated January 7, 1972.
It appears from the Board's Reasons that the only question of law relied on by the employer at the end of the argument before the Board was
Did the adjudicator err in interpreting the collective agreement as precluding the employer from hiring casuals in the circumstances?
Having reached the conclusion that, notwith standing submissions to the contrary on behalf of the applicants, it was entitled to determine this question, the Board examined the various relevant provisions in the collective agreement and reached the following conclusions:
In the context in which the word "required" is used in clause 19.03(b), however, the second sentence applies where letter carriers or supervisory letter carriers are needed to perform overtime work to cover unmanned letter carrier routes. There is nothing in the sentence that limits the employer's discretion to determine whether letter carri ers and supervisory letter carriers are needed on an over time basis to man such routes. It is only where the Employ er determines that letter carrier or supervisory letter carriers are required to perform overtime work to cover unmanned letter carrier routes that it is bound to allocate the overtime in accordance with the principle of equal opportunity. If it had been the intention of the parties to provide that, where overtime on unmanned routes, if the manning of such routes required overtime, shall be allocated to letter carriers or supervisory letter carriers, that intention could have been spelled out in the same way as in clause 17.07(d).
All of the foregoing considerations lead us to the conclu sion that the second sentence of clause 19.03(b) does not create a legal entitlement in letter carriers and supervisory letter carriers to be allocated unmanned letter carrier route. We find that it goes no further than to declare that, if overtime is required—demanded—of them on unmanned letter carrier routes, it is to be allocated in accordance with the broad guideline of the principle of equal opportunity set forth in clause 17.07. Consequently, we find that the Adjudicator erred in law in holding that, the Employer violated the agreement by failing to assign the available work to bargaining unit personnel, albeit on an overtime basis. The decision of the Adjudicator is therefore set aside.
The application to this Court under section 28 of the Federal Court Act is from the decision of the Public Service Staff Relations Board aforesaid.
I think it is fair to say that, in this Court, the applicants put the application to review and set aside the decision of the Public Service Staff Relations Board in the first instance on the proposition that the Board had no authority to determine the question of law referred to it under section 23 of the Public Service Staff Relations Act because
(a) the adjudicator did not make any error of law which was incidental to his deciding the whole matter referred to him, and
(b) the adjudicator reviewed the whole of the collective agreement and gave it an interpre tation which it could reasonably bear.
With great respect to those who have found the matter difficult, I have no doubt that the Public Service Staff Relations Board has unre stricted authority, under section 23 of the Public Service Staff Relations Act, to determine any question of law arising in connection with a matter that has been referred to an adjudicator under that Act. The relevant provisions of the Act seem clear and unambiguous. In the first place, section 91(1) says that, where an employee has presented a "grievance" up to and including the final level in the grievance process with respect to "the interpretation or application in respect of him of a provision of a collective agreement" and his "grievance" has not been dealt with to his satisfaction, he may refer the "grievance" to adjudication. In the second place, we find that section 100(1) pro vides that "every ... decision . .. of . .. an adjudicator" is "final" except "as provided in this Act". Finally we find the contemplated exception to this attribute of finality in section 23, which provides that "where any question of law ... arises in connection with a matter that has been referred to ... an adjudicator pursuant to this Act", either of the parties may refer "the question" to the Board "for ... determination". I find in the statute no qualification, express or implied, on the power to determine such a ques tion of law any more than in the ordinary stat ute where there is provision for appeal on a question of law.
A reference to the authorities relied on by the applicants in this connection suggests to me an explanation of the confusion that seems to have arisen in this connection. All those authorities, as nearly as I can make out, have to do with cases where, even though the decision of an arbitral or statutory tribunal had been given what was apparently the attribute of unqualified finality by agreement of the parties or by stat ute, the courts have concluded that there is a qualified authority in the courts to review the tribunal's decision. I have not been able to find any decision that has held that an absolute power to determine a question of law such as is
found in section 23 of the Public Service Staff Relations Act is subject to some implied qualification.
There is no doubt in my mind that the Public Service Staff Relations Board had authority, under section 23 of the Public Service Staff Relations Act, to determine the question of law concerning the effect of the collective agree ment that arose in connection with the griev ances referred to adjudication by the applicants.
Therefore, this application cannot be dis posed of without considering the question of law as to whether the collective agreement properly interpreted provides a foundation for the applicants' grievances.
Before considering that question of law, a preliminary comment should be made. The col lective agreement has to do with conditions of employment of certain postal employees includ ing letter carriers. The provisions of that agree ment were obviously framed having regard to the state of the relationships existing among the letter carriers, and between the lever carriers and the Government as their employer, at the time when the collective agreement came into force. In considering the effect of the collective agreement or any particular provision of it, it would therefore be relevant—and indeed highly desirable—to know the state of things to which it was to be applied. This would have been so, not only for the purpose of making the terms of the agreement intelligent and to apply them to the facts, but also for the purpose of determin ing whether a term could be implied in the agreement that was not actually expressed. (See Kelantan Government v. Duff Development Co., [1923] A.C. 395, per Viscount Cave, L.C., at pages 411-12.) In this matter there is no evi dence whatsoever about those relationships except such information as is sufficiently within the realm of common knowledge that judicial knowledge can be taken of it. In the circum stances, I am of the view that no opinion should be expressed as to the effect of the collective agreement beyond that which is essential to determine the matter before this Court) If any other question should arise as to the effect of the provisions of the agreement here in ques-
tion, it may be hoped that the surrounding cir cumstances will be established in such a way that an opinion can be formed concerning the effect of the agreement with some confidence that it is applicable to the actual relationships involved.
I turn now to the question of law that must be considered.
It would appear from the Adjudicator's deci sion that what is involved in each of these cases is a situation where a "walk" has been left unmanned due to sickness of the regular letter carrier and the grievor claims that the work of servicing that walk should have been delayed until after he had completed his own route so that he could substitute for the sick letter carri er at overtime rates. This raises at least two questions concerning the effect of the collective agreement. It raises a question as to whether the applicants are entitled to have the work delayed until they are able to do it. It raises a question as to their contractual right to do it if they had been available. On my view of the matter, it is only necessary to deal with the first of these questions. What has to be decided as a matter of law, therefore, as I see it, is whether the collective agreement, properly appreciated, imposed an obligation on the employer to delay the work of servicing the unmanned walk or walks in question so that it could be offered to the respective grievors after they had com pleted their own routes and so that they could, if they wished to do so, substitute for the sick letter carrier or letter carriers. In my view, as I have indicated, this question is all that absolute ly requires to be answered. If the answer to it is in the affirmative, it may be that the Adjudica tor's award should be restored. If the answer to it is in the negative, the Board was correct in setting aside that award. In the latter case, it is unnecessary to form any opinion as to whether the collective agreement expressly or impliedly contains any agreement concerning the hiring of some class of persons called casuals and no opinion should therefore be expressed with ref erence thereto.
My view concerning what I regard . as the first and essential question of law can be stated, briefly. With reference to the work of a "walk"
that is left unmanned by reason of "sickness", we do find that there is a provision in the Collective Agreement (Article 10.04) that such work will go to Supervisory (Relief) Letter Car riers. Taken by itself, that provision would be of no avail to the applicants because the appli cants do not fall in that class. We also find, however, that the agreement contemplates the possibility of such work being done either by letter carriers or by Supervisory (Relief) Letter Carriers at least where they are required to work overtime in order to do it. See Article 19.03. It may be that, read together, these arti cles impose an obligation on the employer to give such work either to letter carriers or to Supervisory (Relief) Letter Carriers. That is a question on which I am of the view that I should express no opinion because, taken by itself, it does not, in my opinion, avail the applicants as I can find nothing in the collective agreement upon which any argument can be based that a postal employee has a right to have some part of the postal service work delayed so that he cari be given an opportunity of doing it, after completing his own work. Therefore, the application should, in my view, be dismissed.
* * *
THURLOW J. (orally)—In my view two points arise on this motion. The first is that of the scope of the authority of the Public Service Staff Relations Board under section 23 of the Public Service Staff Relations Act. That section provides that "where any question of law or jurisdiction arises in connection with a matter that has been referred to" an arbitration tribu nal or an adjudicator, pursuant to the Act, the tribunal or the adjudicator, as the case may be, or either of the parties may refer the question to the Board for hearing and determination. There does not appear to me to be any valid reason for giving the expression "any question of law or jurisdiction" as used in this provision a restricted meaning. In particular I can see no justification for restricting the sort of question of law referable to the Board under section 23 to the sort of question which would justify review of the decision of an arbitrator, whether statutory or consensual, on the principles appli cable in certiorari proceedings. The interpreta-
tion of a contract is prima facie a question of law and in my view the interpretation of the collective agreement here in question in relation to the grievances of the applicants raised a question or questions of law fit to be referred to the Board for hearing and determination under section 23.
Moreover, as the jurisdiction of this Court under section 28 of the Federal Court Act, and in particular section 28(1)(b) is not limited to dealing with points of law which would be open if this proceeding were by way of certiorari it seems clear that this Court is not bound to choose between and give effect either to the interpretation put upon the collective agreement by the adjudicator or to that put upon it by the Board but has authority to substitute its own opinion and to direct that its interpretation be put into effect.
The other point that arises on the motion is that of the correct answer to the question of law which arose in connection with the grievances and was referred to the Board for hearing and determination. Both in the decision of the Board and in the argument before this Court this question was treated as involving what are in reality two questions of law, viz., the ques tion whether the employer breached the collec tive agreement by hiring casual employees to man letter carrier routes temporarily unmanned by reason of the illness of the letter carriers to whom the routes were assigned, and the further question whether the applicants were entitled to do in overtime the work which the casual employees had been employed to do at a time when the applicants were not available to do it by reason of their occupation with their own routes at that time.
As indicated in the course of argument I find it difficult and unsatisfactory to reach firm con clusions as to the meaning of such an agree- ment—in this case a collective agreement made to regulate as between union, employee and employer certain relationships in an overall pre-
existing situation—upon the meagre materials descriptive of the situation to which the agree ment is to apply which are before the Court. In the absence of fuller information any conclu sion as to the meaning of the agreement must of necessity be reached almost entirely on the bare meaning of the words and expressions by which the parties have expressed their agreement. Because I do not think this is calculated to lead to a satisfactory or perfect interpretation of what was intended by the agreement I wish to guard what I shall say with the caution that my conclusions are based only on such materials as are available to the Court and such as may be sufficiently notorious to be taken into account and that I do not propose to reach a firm conclusion on any point other than the rather narrow one on which the result of the motion appears to me to turn.
The agreement itself appears to contemplate that when the employer has regular work to be done during regular working hours members of the bargaining unit will be called upon to do it. I would infer this from the fact that the agree ment provides an elaborate scheme for seniority rights and for the bidding for and assignment of letter carrier walks. The same may be said with respect to overtime work when the employer has work to be done on that basis. From this it seems possible that a contract on the part of the employer might be implied to employ only members of the bargaining unit to do such work or to employ only members of the bargaining unit so far as available for the purpose. It seems unnecessary, however, to finally determine this point, for I find nothing in the terms of the agreement, when considered either individually or collectively, from which it appears to me to be possible to infer, let alone to necessarily conclude, that the employer has contracted with the bargaining unit that he will in a situation of the present kind call upon persons in the posi tion of the applicants to do the work in over time. What the agreement appears to me to provide for on the subject of overtime is the terms on which such work is to be performed when employees are called upon by the employ er to do it. But the agreement does not appear to me to provide that employees in the position of the applicants may require the employer to
call upon them to work overtime to man the unmanned routes after their own routes have been completed.
It does not follow, however, that the employ er is entitled to hire casual help for the purpose of having the unmanned route worked in regular hours simply because he does not decide to have it done by an employee in overtime. In such a situation, assuming that effect of the agreement to be that the work of the employer is to be carried out by bargaining unit personnel or by them so far as available, so far as the collective agreement is concerned, the employer as I see it had the choice
(1) of getting the work done by honouring the agreement that is to say
(a) by following the provisions of article 10.04(a) by assigning available supervisory (relief) letter carriers, or
(b) by an alternative method which the agreement may contemplate such as the assignment of unassigned or part time letter carriers (though I express no opinion on whether such a course is open under the agreement), or
(c) by calling upon the letter carriers or supervisory (relief) letter carriers to work overtime, or
(2) of leaving the work undone.
On the same assumption it seems to me to follow that the employer would not be within his rights and would have committed a breach of the agreement when he employed casual employees to work unmanned routes at a time when methods of having the work done by bargaining unit personnel, under the agreement, had not been exhausted.
On the other hand unless such casual employees were engaged to man the unmanned routes at a time when particular appropriate members of the bargaining unit were available to man them it does not seem to me to be possible to affirm that the particular members of the bargaining unit have thereby been
deprived of overtime work since it is not sug gested that the casual employees were engaged to work on that basis and their work was done at a time when the particular bargaining unit members were not available to man the unmanned routes and the employer, even if the casual employees had not been engaged to do the work, was not required by the agreement to have the work done by the applicants as over time work. It is perhaps not unlikely that if the employer had been unable to find casual employees to man the routes he might have called on the particular bargaining unit members to do the work as overtime but that is a differ ent matter and indeed is but one of fact. It cannot, as I see it, be said that the employer broke the provisions of the agreement with respect to overtime work and thereby deprived the particular complainants of an opportunity to work overtime when they were never in a posi tion to demand that the work be done as over time work and that they be employed to do it.
As this leads to the same conclusion as that reached by the Board, that is to say, that the decision of the adjudicator should be set aside I would dismiss the motion.
Smith D.J. concurs with the Chief Justice.
In my view, where there is a reference of a question of law arising in connection with the decision of a matter or an appeal on a question of law, what has to be decided is a question of law that is determinative of the matter and not necessarily the question of law formulated by the parties or the lower tribunal. In this connection, I refer to a recent decision of the Supreme Court of Canada in an immigration appeal (Leiba v. The Minister of Manpower and Immigra tion pronounced January 25, 1972).
 You are being directed to the most recent version of the statute which may not be the version considered at the time of the judgment.