I do not know what the practice is in other jurisdictions, but collective bargaining agreements (CBAs) in the New Mexico public sector typically include a clause prohibiting all kinds of statutorily illegal discrimination, not just that related to collective bargaining. In these same contracts, there are also mandatory grievance-arbitration requirements that purportedly apply to all provisions except those that are expressly exempted. Moreover, although these contracts frequently state that claims for discrimination or retaliation based on union activity may be brought before the state labor board, the New Mexico Public Employee Labor Relations Board (PELRB), there is no such carve out or proviso concerning other statutory discrimination claims.
While a hearing examiner with the PELRB I had previously wondered, privately, if such clauses could be read together to require employees to assert these claims through arbitration. I had, frankly, tended to assume such a thing could not be a good thing. However, Hoyt N. Wheeler has written a provocative, pause-giving little article in the LERA publication, Perspectives on Work, Vol. 14*, Summer 2010/Winter 2011, about the possible positive outcomes such arbitration. See “Unions and the Arbitration of Statutory Rights,” Perspectives at 26-28.