Interesting thing about government workers and sick days in that they can bank them and at retirement get cashed out for unused ones. Which makes it an entitlement, not an insurance policy.
Up until the early 70s we could bank the unused ones up to a maximum of 250 days and then at retirement get paid out for 1/2. When I retired I got paid out for just over 60 days, earned prior to about 1974. Of course all that came to a crashing halt, as a trade off for long term sick, which I suppose was fair, just a trade off from the healthy guys to provide more benefits for the sickies. A little later the short term sick leave was reduced to 3/4 days pay per day off sick. I thought that was a good idea as you'd think it would stem abuse.