If you were in a jury box and were shown just this message and a note about how he was fired two months later for "not being a team player" you'd infer the intent and vote to hold the company liable for wrongful termination.

Corpospeak keeps a "work through lunch" message from being a self-evident labor law violation even if no adverse action occurrrd. They don't disguise intent if those later bad actions occur

Doesn't "correct this behavior" very directly imply that the current behavior (in this case, taking your full lunch break) is incorrect and therefore in need of correction, though?

It's one thing to suggest something, but calling it a "correction" changes things, I'd think.

No that's not a "safe" way to say this. It's a pretty god damn clear demand