Even when they did, it was often more a case of 120% time, ie you were expected to do your normal work (which would easily fill a "normal" 40 hour workweek) and

Even when they did, it was often more a case of 120% time, ie you were expected to do your normal work (which would easily fill a "normal" 40 hour workweek) and then the "20%" part would be in addition to that.