If you are in a union, report it to the union as well.
Would I have to reveal who I am and if so would it get back to my employer?
The BOH might take an anonymous complaint. Call on phone and ask, explaining your fear of retaliation. as Atty. Roher pointed out, there is strength in numbers. A joint complaint by a number of employees will carry great weight. OSHA and the state Dept. of Labor may very well take anonymous complaints.