HC Deb 12 December 1966 vol 738 c6W
60. Sir E. Brown

asked the Minister of Labour what proportion of industrial workers is currently on double and treble shift working, respectively.

Mrs. Shirley Williams

In all manufacturing industries, about 8 per cent. in each case. This estimate is based on the results of an inquiry into shift-working held by the Ministry in October, 1964. We have no reason to believe that there has been any substantial change in the proportions in the past two years.