“From Hansard”:http://www.publications.parliament.uk/pa/cm200809/cmhansrd/cm091020/debtext/91020-0006.htm , in the context of the impending UK postal strike:

bq. Mr. Peter Atkinson (Hexham) (Con): Does the Minister have any idea how many postal workers, particularly in London, have second jobs? It is the threat— [ Interruption. ] It is the threat that they might have to work a full shift for which they are paid that is adding to the militancy. [ Interruption. ]

Second jobs? Leaving work without working a full shift? I can well see that British MPs would be outraged by such practices. Here’s to the success of Billy Hayes and the CWU!