PARTIES Brotherhood of Maintenance of Way Employes
 _TO
 DISPUTE: and
 Consolidated Rail Corporation
 STATEMENT (a) The Carrier violated the Rules Agreement
 _OF
 CLAIM: effective April 15, 1944, as amended, particu
 larly Rule 1, Scope, when Welding Supervisor
 P. Kranenberg and a Welder from the former
 Pennsylvania Railroad performed Welder's work
 at various locations on the former Lehigh Valley
 Railroad on November 1, 2, 3, S and 9, 1977;
 and additionally received 15 hours overtime.
 (b) As a result Welder S. Cappellano, who
 normally performed the work in question prior
 to' his position being abolished on October 31,
 1977, be compensated eight hours. pro rata for
 each date stipulated above, as well as 15 hours
 at the overtime rate.

FINDINGS: The issue is whether a non-bargaining unit em
 ploye, Welding Supervisor Kranenberg, performed
 bargaining unit work on the days in question.
 It is undisputed that claimant, a welder, was
 on furlough on those days.
 Claimant's 'position as welder was abolished on
 October 31, 1977. It is Petitioner's contention, and claimant
 states, that on the following day and the several specified dates
 thereafter welding work was performed by Mr. Kranenberg and "a
 welder from the Pennsylvania Railroad." According to claimant,
 that work. included "duties which are normally performed by myself."
 It allegedly was performed at Richards Abbott Street and Kennedy
 Crossing on the welded rail segment of former Lehigh Valley
 Trackage.
 Confronted with these statements, it was incumb
 ent upon Carrier to come forward with facts showing that no
 welding work was in fact performed by Kranenberg while claimant
 was on furlough or that some emergency or other exceptional set
 of circumstances made it necessary to call upon Kranenberg. It
 was not, an effective reply to the claim to state that Mr. Kranen
 berg "was working in his capacity as a Welding Supervisor."
 While we. agree with Carrier that exclusivity
 must be shown, it is our conclusion that where such specific
 craft work as welding is involved, that work clearly belongs to

members of the bargaining unit who were on furlough in the absence of a showing by Carrier that it was necessary or proper for the foreman to handle it under the specific circumstances of this case. The burden of coming forward with that evidence rests with Carrier. Principles as to proof must bcr evenly applied.

 AWARD: Claim sustained. Award to be effective
 within 30 days of adoption.
 Adopted at Philadelphia, Pa., si4a~cw.l~ ,1-979C'.
 ~. 'r~
 Har M. Westo , Chairman=
 1

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    Carrier-Member~ Employee Member