I did retirement home training and used to think it was a sweet job. Then I got in the business and underestimated how demoralizing it was as they give you the easy elders in training while the others make you, or at least me, really think of the fact the job just amounts to an unkarmic freebie.
Any position in the for profit medical payment processing profession, it should be single payer through taxes instead.
Any investment position that exists to leech money out of successful companies instead of providing cash to improve the business. Basically any part of.a vulture capital firm.
Any pseudo pretend medical profession that has decades without evidence it works like chiropractors. I'm fine with mediums and other charlatans that at least put up a 'for entertainment purposes only' sign and don't have a history of causing injuries to their clientel.
Anything involving targeted advertising since it relies on scooping up personal data.
Debt collectors. The businesses took the risk when they loaned money or provided some kind of service on credit. Selling debt to collectors who maliciously lie and guilt people into paying money they don't really owe or tricking them into paying debt that would disappear after a period of time is horrible. There are no respectable debt collection companies.