Hugo Black

“ On this basis it is quite naturally assumed that a dispute over work assignments is a dispute between an employer and only one union. Thus, it is argued that each collective bargaining agreement is a thing apart from all others and each dispute over work assignments must be decided on the language of a single such agreement considered in isolation from all others.
We reject this line of reasoning. A collective bargaining agreement is not an ordinary contract for the purchase of goods and services, nor is it governed by the same old common-law concepts, which control such private contracts. ”

“ The ordinary jurisdictional dispute arises when two or more unions claim the right to perform a job which existed at the time their collective bargaining contracts with the employer were made. In such a situation it would be highly unlikely that each contract could be construed as giving each union the right to be paid for the single job. But the dispute before us now is not the ordinary jurisdictional dispute where each union claims the right to perform a job which existed at the time its collective bargaining agreement was made. ”

“ Here, though two jobs existed when the collective bargaining agreements were made and though the railroad properly could contract with one union to perform one job and the other union to perform the other, automation has now resulted in there being only one job, a job which is different from either of the former two jobs and which was not expressly contracted to either of the unions. ”