I called in sick last Thanksgiving. I never got a call. I caught a cold while on a layover on an international trip several days before and finished the trip so I could get home. Then I had my next trip (I was 5 days into the cold) so I put in for sick list over Thanksgiving. I think I didn't get a call from the CPO because I usually use sick list 1 or 2 times a year. My philosophy is simple, sick list is like an insurance policy and when I'm sick I use it, if I'm not, I don't use it. Some pilots with small kids will get sick a lot because they bring every germ known to man home from school. If your sick, use it, if you are trying to improve your schedule, don't use it.