A 2007 Question of the Month involved unions in labs. You can see the answers here: http://laboratorian.advanceweb.com/Article/We-Asked-You-Answered-24.aspx
I think it would be a good idea to present a united front to management. I don't know if a union would ever catch on in the South, though. Another option would be to consolidate all the various "registries" that certify laboratory professionals.