Here is a copy of the act: http://www.nlrb.gov/about_us/overview/national_labor_relations_act.aspx
Can you find the language yourself above or do you need my help?
You may also want to do a search here: www.dol.gov
As you know, I cannot provide specific legal advice here, just information.
Jane Doe Deer
Employment Lawyer
Atty. 22 years; Plain English - Discrimination, Fire/Hire, Non-Compete, etc.