7 days of self cert statuary sick is incentive enough especially on various age related minimum wage to grub about work that's if you are lucky enough to have contract, naff all for many in the big economy.
Also worth remembering sick notes were scrapped and fitness to work came in. It's good to work, it's best for the soul
Myself lucky would have full 6 months pay while off sick, but have 3 colds and off sick with all of them within the first year of first registered sickness my local authority willl look to terminate your employment.
All in all very easy to be grubbiing about while with a virus, very easy if it's just a slight tickcleled cough...
It's not really just about the pay.
I can count on one hand the amount of times i've called in sick over three jobs in the last 10 years.
Not wearing it as a badge of honour. That's just me - I wouldn't want to let people down. Also, luckily, I haven't been ill enough to warrant it and only when I was would I call in sick. Another one is that one of those jobs I've been able to work from home, and that will now be working from home permanently, so obviously that has helped.
If someone is regularly calling in sick, then it doesn't help them keep a job. Nothing to do with money - if they're not going into work, then really it's just not productive for anybody.
I suppose a major positive of covid in that sense is that if it's an office job, most have realised they are fine working from home. That should really mean less people calling in sick, as if they can work from home then the issue of spreading it is reduced. It would also I suppose help what I was discussing with @tsubaki about people having to isolate, if they can at least keep working in the meantime.
