sausagefest I think that's a bit unfair.
Lots of people don't get paid if they don't go in.
Lots of companies have policies which state that more than 4 instances of sick leave = disciplinary action by HR.
Both those factors really concentrate your mind when deciding how ill you are.
I do know someone who lost her job due to overuse of sick leave. Her parents had brought her up to take time off school/work every time she had a cold. She was quite shocked to be sacked.
In my experience those that take lots of sick days (through minor things like colds) are top of the list when redundancies are being made.