Discuss the following in your main post:

The industrial relations principles are not designed to apply favorably to only one segment. The company, union, and employee perspective must be taken into consideration in the grievance process. Discuss each of these perspectives. 
Whether the differences are relatively minor or vastly different, labor laws can vary based on the specific state law. Discuss a labor law from your state. You can use this site to assist you in your research. 
If you were to accept a position in another state, why do you believe it would be important to understand the state labor laws prior to arriving at your new position