Then that's clearly the problem of the mechanics. You're going to hold the employment status of these women (of which many are still upset over losing their job in the first place) responsible instead of actually confronting the assholes that have done this shit in the past?

"You think the guys pinching asses at the Formula One race aren’t doing other places too?"
You really think that firing these women is going to stop these assholes from continuing to do this outside their work station? This is not a solution, if this is really a problem then the women who are being pinched and groped shouldn't be suffering for it by being fired, especially if they still want their job.

We're sorry that you applied for this job Sarah but Jack just won't stop groping you, so… instead of holding him responsible, I'm going to have to fire you. Yeah, sure, that makes sense.