In ss. 103.01 to 103.03:
(1)
(a) “Employer” means every person having control or custody of any employment or place of employment.
(b) “Employer” includes the state, its political subdivisions and any office, department, independent agency, authority, institution, association, society or other body in state or local government created or authorized to be created by the constitution or any law, including the legislature and the courts.
(2) “Employment” means any trade, occupation or process of manufacture, or any method of carrying on such trade or occupation in which any person may be engaged, or for any place of employment.
(3) “Place of employment” means any manufactory, mechanical or mercantile establishment, beauty parlor, laundry, restaurant, confectionary store, or telegraph or telecommunications office or exchange, any express or transportation establishment or any hotel.