A few years back I was presented a sick leave letter for scheduling 4 doctors appointments within a few months of eachother all on Thursdays. They were all entered and approved weeks prior and I told them exactly what the appointments were for and why it was on Thursdays... the only other time I could have scheduled them were Mondays and that would have messed up the schedule at work even worse making someone move back in the day that would mess up their ability to pick kid up from school. I had well over 200 hours of sick leave so definitely not a turn and burn person. They found another Thursday I called in sick a year prior and put them all together as a "pattern"... I was actually floored at how crazy it was. That sup was a dick and after talking to the useless rep I went right to the ATM and he squashed it without hesitation.
Then there's a guy who's a sup now that used to call off every Sunday/Monday that his football team played on.... never gave him a sick letter, they just promoted him.