I agree that this application should be refused and the rule nisi discharged. I consider that there was no industrial question, in the statutory sense, which gave the Flight Crew Officers Industrial Tribunal a jurisdiction which it refused to exercise. The grievance of the prosecutor, as expressed in its original notification of what it called an industrial dispute, was that its members who had been given notice of the termination of their employment would suffer hardship. That, although it may attract sympathy, does not confer jurisdiction. The Award provides for the termination of the services of pilots because of redundancy. The expression is clumsy: but the meaning is plain. The contention that the respondent, Qantas, had a duty "to avert a redundancy situation" and that it should have "taken steps to increase its operations and thereby its pilot establishment" is simply a complaint of the way in which it had managed its affairs. The Tribunal has no obligation, indeed I consider no authority, to investigate the way in which an employer conducts his business if he does so within the framework of the existing law. A mandamus can issue out of this Court against the Tribunal, or more accurately against the officer of the Commonwealth who constitutes it: The Constitution, s. 75. A mandamus commands the person to whom it is addressed to do an act or to shew cause why he has not done it: High Court Rules, O. 55, r. 19. I do not think that any such order could issue on the existing material, for it is not apparent to me what it is said that the Tribunal has failed to do that it ought to have done. Having regard to the way the proceedings before the Commissioner who constituted the Tribunal developed, what he was asked was really to vary the existing award, by repealing one provision of it and substituting a provision in a different form which would have a retrospective operation. As I read his judgment he declined to do this, not because he held that he had no jurisdiction to vary the Award, but because he considered that no occasion for doing so had arisen. I need not elaborate further my agreement in the judgment of the Chief Justice.