Section 204 - Recognition and certification of employee organizations1. Public employers are hereby empowered to recognize employee organizations for the purpose of negotiating collectively in the determination of, and administration of grievances arising under, the terms and conditions of employment of their public employees as provided in this article, and to negotiate and enter into written agreements with such employee organizations in determining such terms and conditions of employment.2. Where an employee organization has been certified or recognized pursuant to the provisions of this article, it shall be the exclusive representative, for the purposes of this article, of all the employees in the appropriate negotiating unit, and the appropriate public employer shall be, and hereby is, required to negotiate collectively with such employee organization in the determination of, and administration of grievances arising under, the terms and conditions of employment of the public employees as provided in this article, and to negotiate and enter into written agreements with such employee organizations in determining such terms and conditions of employment.3. For the purpose of this article, to negotiate collectively is the performance of the mutual obligation of the public employer and a recognized or certified employee organization to meet at reasonable times and confer in good faith with respect to wages, hours, and other terms and conditions of employment, or the negotiation of an agreement, or any question arising thereunder, and the execution of a written agreement incorporating any agreement reached if requested by either party, but such obligation does not compel either party to agree to a proposal or require the making of a concession.