1. Logging workers
2. Fishing and related workers
3. Aircraft pilots and flight engineers
4. Other extraction workers
5. Roofers
6. Refuse and recyclable material collectors
7. Mining machine operators
8. Driver/sales workers and truck drivers
9. Farmers, ranchers
10. Electrical power-line installers and repairers
11. Construction laborers
12. Taxi drivers and chauffeurs
13. Maintenance and repair workers, general
14. Grounds maintenance workers
15. Police and sheriff’s patrol officers

From here.

I’ve never seen the grounds maintenance workers complaining about how dangerous their job is. I’ve never heard of them abusing anyone because it’s better to be judged by 12 than carried by 6, or because the most important thing is to go home at the end of the shift.