A no-strike clause is a provision in a collective bargaining contract in which the union promises that during the life of the contract the employees will not engage in strikes, slowdowns, or other job actions. A union often agrees to such a clause in exchange for a grievance arbitration provision.
Athough the NLRA grants employees the right to strike, not all strikes are protected. If a collective bargaining agreement contains a no-strike clause (the union agrees not to go on strike while the contract is in effect), a strike during the life of the contract would not be protected. The strikers could be fired.
The following is an example of a no-strike clause: