means--
a) an employer who employs 50 or more employees;
b) an employer who employs fewer that 50 employees, but has a total annual turnover that is equal to or above the applicable annual turnover of a small business in terms of Schedule 4 to this Act;
c) a municipality, as referred to in Chapter 7 of the Constitution;
d) an organ of state as defined in section 239 of the Constitution, but excluding local spheres of government, the National Defence Force, the National Intelligence Agency and the South African Secret Service; and
e) an employer bound by a collective agreement in terms of section 23 or 31 of the Labour Relations Act, which appoints it as a designated employer in terms of this Act, to the extent provided for in the agreement;