Horizon is not so bad. They used to require a call to a voicemail for the chief pilot's office in addition to crew scheduling. Now they only require a call to crew scheduling.
My toddler son started daycare in January. He got sick a lot, and got my wife and I sick a lot. Between all that I ended up having to call in sick a bunch. Didn't hear anything about it from managers. And in fact, they let me use some vacation time to cover a missed trip after my sick time ran out.
Most definitely not all positives around here, not even close. But I am happy with how they handle sick calls (at least in my case).