>Long story short, my supervisor is a moron that will eventually get our work into some OSHA violation because some workers are working more than 40 hours per week and not getting paid overtime for those hours.

This isn't an OSHA issue, it's a DOL issue. OSHA is the Occupational Safety and Health Administration.

You mention your co-worker was recently promoted. If they were promoted to a salaried/exempt position, they are not required to be paid OT for hours worked beyond 40.