express provision excluding a particular grievance from arbitration, we think only the most forceful evidence of a purpose to exclude the claim from arbitration can prevail, particularly where, as here, the exclusion clause is vague and the arbitration clause quite broad. Since any attempt by a court to infer such a purpose necessarily comprehends the merits, the court should view with suspicion an attempt to persuade it to become entangled in the construction of the substantive provisions of a labor agreement, even through the back door of interpreting the arbitration clause, when the alternative is to utilize the services of an arbitrator.
The grievance alleged that the contracting out was a violation of the collective bargaining agreement. There was, therefore, a dispute “as to the meaning and application of the provisions of this Agreement” which the parties had agreed would be determined by arbitration.
The judiciary sits in these cases to bring into operation an arbitral process which substitutes a regime of peaceful settlement for the older regime of industrial conflict. Whether contracting out in the present case violated the agreement is the question. It is a question for the arbiter, not for the courts. Reversed
Mr. Justice Frankfurter concurs in the result.
Mr. Justice Black took no part in the consideration or decision of this case.
[For opinion of Mr. Justice Brennan, joined by Mr. Justice Frankfurter and Mr. Justice Harlan, see
ante, p. 569.]
Mr. Justice Whittaker, dissenting.
Until today, I have understood it to be the unquestioned law, as this Court has consistently held, that arbitrators are private judges chosen by the parties to decide