This is likely a matter for the EEOC or the state version. I don't see why those other agencies would be involved. Unlike OSHA, I don't think the EEOC has a p

This is likely a matter for the EEOC or the state version. I don't see why those other agencies would be involved. Unlike OSHA, I don't think the EEOC has a process for accepting tips, and I don't think they open original investigations. I believe someone has to claim they have been harmed. OP could encourage someone to apply, see if they get turned away on the basis of sex, and then they could file a charge of discrimination. That would probably be the most direct way. However, I think this sort of explicit in-the-docs discrimination is unusual, and OP might find that they have already identified themselves to the employer. Of course, there are also rules against retaliation.