When I worked in the UK (3 jobs over eight years) I was never asked to do that; the closest was that I was ask to sign as to whether the 48h/week limit would ap

When I worked in the UK (3 jobs over eight years) I was never asked to do that; the closest was that I was ask to sign as to whether the 48h/week limit would apply week-by-week, or averaged out over 17 weeks (as per the regulations).