We get three days per year sick. Most people have used them by this time of year so they're straight onto statutory sick if they're off now, no chance they're going to be honest now and get cut down to 90 quid a week.
If you were employed and woke up feeling a bit ropey. Would you take the hit and live on 90 quid a week for two weeks or just not mention it? Asking people to be responsible is all very well, but most can’t afford to.