On June 4, 1979, New York State and the Security Unit employees, Council 82, AFSCME, AFL-CIO, signed a collective bargaining agreement, for the period April 1, 1979 through March 31, 1982, covering employees in the Security Services Negotiating Unit which requires that employee performance be evaluated in an objective manner based on standards established by a joint Labor/Management Committee. Monetary compensation, in the form of a performance advancement payment, shall be available to eligible employees in the unit dependent upon the employee performance rating. The purpose of such performance evaluation is to motivate all employees toward more effective performance and greater productivity by the provision of advancements to eligible employees and by periodic job evaluation for others.