As an employee, I minded my own business in the office. I didn't ask why people were out, when they left early or anything else they did. That was not my role. I stayed in my lane, always.
When I managed a team, I didn't question or accuse when people needed time off. They earned their time off. Only when they exceeded the generous policy the company has in place, was it my responsibility to coach and manage that person. It happened twice in my 25 year career in management. One I wrote up for excessive absences. Then the company announced a reduction in force and she was at the top of my list. I wasn't sad to see her go. Neither were her co-workers. The other also called in a lot, with loads of excuses. One morning he called in- something about a sick family member. As I was having my coffee, watching the Today Show, I spotted him rockin out to Beyonce outside the Today Show studio.
He was fired when he got back.