I don't think the "natural properties" of a career or industry will be enough to be lowest. I think an industry or career with high oversight from many individuals and regulators. Likely something that has fucked up before, and massively.
Slot machine programmer.
- regulated industry
- work can be checked many times
- customers (casinos) don't want to be fucked
- gamblers don't want to be fucked
- loads of money to be made doing things well
- lots of scary people willing to drop you in a hole
This actually is a hard question. I assume it needs to be an industry that is small, doesn't have huge margins and probably is primarily manual labour.
Maybe something like blacksmithing?
I was going to say meteorologist, but it looks like Latin times says there are some people that disagree... https://www.latintimes.com/murdering-meteorologists-wont-stop-hurricanes-forecaster-flooded-violent-threats-weather-561991
Massage therapist
What are they going to do, rub you extra rough if you're a Democrat?
Not criticizing it and it depends on whether you consider it "corruption", but isn't there a large underground market of sexual services via massage?
I feel like it's one of those things that if a cishet dude says they went to get a massage, it raises immediate jokes or suspicion.
Pretty sure there is. Went for a massage recently, and 'this is not a sexual encounter' is explicitly in the terms of service you have to sign when making an appointment.
A lot of men in my neighborhood seem to have died while being in proximity to a "cleaning lady."