If this is the case, it will be important for employers to stay up to date on developments in this area, as cases will be brought before the NLRB General Counsel and the Board of Directors. A unilateral act in which either party to a collective agreement of indefinite duration intends to terminate it. Such termination is governed by law, both in the form it must take and in relation to its consequences. If the dismissal results from only one or some of the signatory unions, it shall take effect, for the most part, only in respect of that union or unions; the agreement remains in force for the other parties. In the event of dismissal by the employer (where there is usually only one signatory), the agreement in question remains in force until it is replaced by a new one or, in the absence of such replacement, for a period of one year. .