Who do i contact in Ohio to file a complaint against an employer?

I want to file a formal complaint in Ohio against my previous employer. This complaint does NOT involve discrimination. I would greatly appreciate if someone could tell me who to contact. Thankyou in advance for any help.|||I usually complain to my bartender. If you are asking if there is some government agency that is interested in your type of complaint, you should mention the nature of the complaint.|||State dept of labor usually, unless its a federal crime, or if your employer was a hospital, then you contact the dept of health perhaps