Shirley, the JWs have already "wrote the book" on how to sue for exactly the reason that your OP is about
Three pages of court cases:
http://jwemployees.bravehost.com/NewsReports/2011.html
And more employment court cases here:
http://jwemployees.bravehost.com/
The JWs must be one of the most litigious groups there is. They set the precedent.