and justify the attachment of a condition. To fulfill its function the District Court must also consider the hardships, if any, that would arise if the employees were required to await the Board’s sometimes long-delayed decisions without recourse to a strike. But this examination of the nature of the dispute is so unlike that which the Adjustment Board will make of the merits of the same dispute, and is for such a dissimilar purpose, that it could not interfere with the later consideration of the grievance by the Adjustment Board.
Moreover, such an examination is inherent in the grant of the injunction itself. Yet it is settled, since Chicago River, that an injunction may issue to preserve the Board’s jurisdiction. We think that, in logic, we must hold that the conditions are proper also, at least where they are designed not only to promote the interests of justice, but also to preserve the jurisdiction of the Board.
It is not difficult to perceive how the conditions imposed in this case could be deemed to serve to protect the jurisdiction of the Board. The dispute out of which the judicial controversy arose does not merely concern rates of pay or job assignments, but rather involves the discharge of employees from positions long held and the dislocation of others from their homes. From the point of view of these employees, the critical point in the dispute may be when the change is made, for, by the time of the frequently long-delayed Board decision, it might well be impossible to make them whole in any realistic sense. If this be so, the action of the district judge, rather than defeating the Board’s jurisdiction, would operate to preserve that jurisdiction by preventing injury so irreparable that a decision of the Board in the unions’ favor would be but an empty victory.
It is true that preventing the Railroad from instituting the change imposed upon it the burden of maintaining what-may be a less efficient and more costly operation.