Quite the most difficult problem in regard to labour was that of securing their wholehearted co-operation in the urgent task of munition production—by sticking in the same workshop, keeping good time, working steadily and avoiding strikes; and in particular by consenting to those relaxations of their trade union rules which would make possible an extensive dilution of skilled by unskilled workers, and a considerable use of overtime in cases of emergency.
— DAVID LLOYD GEORGE