Fun semi-related fact: Even in nazi Germany during the war, refusing to work in a concentration camp didn’t lead to any punishment.
People did it willingly when they were assigned, cause it was a well-paid job that didn’t carry much risk, and refusing might be detrimental to their career.
After the war of course, they claimed that it was a choice between “go to the camp as a warden or go to the camp as prisoner”, but that’s been proven to be wrong in all cases.