Lord Simonds.-

In this appeal, which is brought from a judgment of the Court of Appeal for Saskatchewan, a question of constitutional importance is raised whether certain provisions of the Trade Union Act, 1944, of the Province of Saskatchewan, which will be referred to as "the Act", are within the legislative powers of that Province under the British North America Act, 1867,

[2] The facts of the case upon which the question arises are not in dispute and can be shortly stated.

[3] On 15th May 1947, the respondent, John East Iron Works, Limited which carries on business in Saskatchewan, dismissed from its employment six of its employees. Thereupon the United Steel Workers of America, a trade union, complaining that the respondent in dismissing these employees bad been guilty of an unfair labour practice within the meaning of S. 8 (1) (e) of the Act applied to the appellant, the Labour Relations Board of Saskatchewan, for orders requiring the respondent to reinstate them and to pay them the monetary loss suffered by them by reason of their dismissal. On 10th, 11th and 12th June 1947, the union's applications were beard by the appellant Board and in the coarse of the hearing the applicat