So is working for the Mafia
Or being a drug trafficker.
The problem is that it's a bit harder to get accurate data on working conditions etc. in those types of professions. It's probably not quite as easy to clearly assign a cause of death - even "lead poisoning" - to an occupational or private status. Sometimes it's even hard for juries to determine whether someone is a plumbing supplies salesman or a hitman.
I suppose the EEOC could send a 5-page questionnaire to various drug lords, street prostitutes and mafia types, or go door-to-door with a clipboard.