Occupational safety is very important, even in evil empires. Just look what happens if you don't have it.
Daine Jir: Holding her is dangerous. If word of this gets out, it could generate sympathy for the Rebellion in the Senate.
Darth Vader: Word will not get out. Will it, Commander?
Daine Jir: It won't?
Darth Vader: Everyone concerned will meet with an unfortunate accident.
Daine Jir: Oh no. I'll inform our occupational safety committee immediately.
Darth Vader: No. You're going to kill everyone who knows.
Daine Jir: Oh dear. Even myself?
Darth Vader: Yes.