Pilot pushing.

Now the company may have pay policies (we do) such that if you call in fatigued on day two of a four day because...

A. You had acute fatigue because you didn't sleep that night due to the hotel being too loud/hot/cold. etc you would get paid for the missed flying.

B. You had chronic fatigue because you had a baby at home and didn't sleep much in the week prior to coming to work...not getting paid.

Don't specify acute or chronic fatigue if you call in. The company can ask for details about why you're fatigued, but if they don't like your answer they cannot force you to fly. Once you drop the "F Bomb" the FAA now requires that you be removed from duty, no negotiation, discussion or pushback. If they push you, call your CMO...they'd love to hear about it.