How else can contracts concern the right to representation?
The parties may also define in their contract how they will exercise and implement their statutory rights, such as the manner in which notice will be given for formal discussions. As with contract rights establishing a right to representation, any dispute over whether a party has complied with a particular contract provision concerning how a statutory right would be exercised would be a grievance and not an unfair labor practice, unless it is a repudiation. However, if a party charges that the other has not complied with a statutory right (rather than the particular contract provision), the contract provision that limits or defines the implementation of that statutory right may be a defense to the unfair labor practice allegation.