Ahhh ... generational stereotyping; a sure sign of a weak mind ...
telling their boss
"Their"? That's a plural form of personal pronoun. "His boss" or "Her boss" is correct.
couldn't attend an 8 a.m. meeting because they had a 'workout class.'
No. That's normal business hours.
If this employee was hired with the expectation that he’d be starting work every day at 9:00AM, then I’m on his side — and it doesn’t matter what he’s doing at 8:00. If the employer had made it clear that an occasional early meeting was part of the expectations for the position, then I’m on this employer’s side.
In either case, I don’t think the employee is doing himself any favors here.
When it became common usage to use “their“ for a singular person, I thought it was to avoid the awkward “his or her“. With what has happened in the past few years, perhaps it was just preparing us for transgenderism.
It is a colloquialism…not wokeism.
People these days write the way they speak. That’s all this is. Proper grammar is hardly enforced these days. It is a primary reason there are so many misunderstandings.