Mine is - DO NOT go to the building you work at. Like if you’re a retail worker, it is not wise to go to the store you work at or the restaurant. Because they see you come in shopping for whatever reason, they’ll possibly be on your ass about you being able to come in and shop but not work that day.
If it’s a sick day, by god do not touch ANY of your social media. Your boss (or worse, the office/shop/site brown-noser) will check.
If it’s a sick day I definitely check my social.media and will even check work-teams every few hours.
I will talk to my boss or my boss-boss on teams during a sick day.
Union.
Your union is not doing enough
Tell us more about their union.
Sounds like bosses are still forcing people to reply things on corporate messaging. That’s unpaid work.