THE WAR PERIOD—AN INTERREGNUM 51 conditions. Employers were no less desirous to free them- selves from the control of governmental agencies, and to prepare for the period of reconstruction and severe read- justments which they saw clearly ahead of them. As a matter of fact, however, there were many under- lying tendencies that the war had developed, which were to have a constraining influence on wages in the future. The advantage in industry of mass production and coop- erative efficiency had been made apparent. It had been demonstrated that with proper cooperation between capital and labor, industrial output could be wonderfully acceler- ated and increased, and altho wage rates per hour or day might be higher, the actual labor costs in terms of units of product under these new conditions might be lower. To many industrial and labor leaders, the war experience afforded the basis of a vision of what might be accom- plished in the future under proper leadership and with a real spirit of cooperation. Government control of industry, the constant pressure for increased production, as well as the physical examina- tions under the Selective Service Law, had also made impressions upon the public mind as to the human and social evils of the low wage scales prevailing prior to the conflict.r Both from the standpoint of proper national defense and from that of realizing the highest productive efficiency of industry, the war had shown that earnings of industrial workers, especially those in the lowest scale, must be adequate for physical needs and healthful living require- ments. The supreme effort to make “the world safe for democracy” had also brought with it the accompanying demand for “democracy in industry,” which meant, in addition to a share in industrial management and control, 1 United States Provost Marshal—Second Report to the Secretary of War on the Operation of the Selective Service System to December 20, 1918. Washington, Government Printing Office, 1919: pp. 154-157.