Every state department, county agency, or other public or private agencies providing programs and services to the disadvantaged, refugees, and immigrants shall be encouraged to actively work toward the goals and objectives established by the office of community services and to coordinate with the office of community services the development of its program plans. The executive heads of all such departments and agencies shall cooperate with the office of community services in providing information as the office deems necessary for the effective discharge of its duties. However, nothing contained in this chapter shall be deemed to delegate or detract in any way from the functions, powers, and duties prescribed by law for any other department or agency of this State or county, nor to terminate any existing contracts between such department or agency and any private organizations for the development or administration of programs or services to the disadvantaged, refugees, and immigrants. Notwithstanding that each county shall maintain maximum control over the development and administration of human service programs tailored to meet county needs, each department, agency, officer, and employee of the State and of the counties shall cooperate with and assist the office of community services in the performance of the functions, powers, and duties of the office.