"8. Insisting on doctor’s notes in order to take sick days." Is this common in the US? Even for a single day? I'm in the UK and my contract states (from memor

"8. Insisting on doctor’s notes in order to take sick days." Is this common in the US? Even for a single day? I'm in the UK and my contract states (from memory) that I have to get a doctors certificate after five contiguous days of sickness. I'm fairly sure thats been the same for all other companies I've worked for.