I've never used these guys, but they are a big firm and if your equity is worth a lot you may want to consider them:

http://www.kattenlaw.com/employmentlaw

I can't recommend them other than to say that it is a fairly large firm and if I needed a first call, I'd probably call them.

If you want a smaller shop most bar associations have special practice groups. They have referall practices that are basically free or very cheap and can get you a basic lay of the land way better than anyone on here. Here is the one that I think is closest to you: http://www.meckbar.org/lawyerreferral/lawyerreferral.cfm