"Employer" means:
1. The State of Nevada, any state agency, county, city, town, school district or other unit of local government;
2. Any public or quasi-public corporation;
3. Any person, firm, corporation, partnership or association; and
4. Any officer or management official having direction or custody of any employment or employee.
(Added to NRS by 1973, 1010; A 1975, 765)