Rule 1105.
(2) "Establishment" means a single physical location where business is conducted or where services or industrial operations are performed. For activities where employees do not work at a single physical location, such as construction; transportation; communications; electric, gas, and sanitary services; and similar operations, the establishment is represented by main or branch offices, terminals, stations, and the like that either supervise the activities or are the base from which personnel carry out the activities. The following are examples of an establishment:
(l) Central administrative office.(m) Single school within a school district.(n) City garage within the department of public works. (o) Branch office of the department of state.(p) Police station within the police department of a city.