The Code of Practice for Determining Employment or Self-employment Status of Individuals (pdf) contains criteria which can be used to clarify whether a person is employed or self-employed. In most cases, it is clear whether a person is an employee or not.
The 708 area code belongs to the state of Illinois (IL) and some of the locations covered are Cicero, Oak Park and more:
Area code 707 is found in the US state of California. Primarily servicing the city of Santa Rosa (population: 213289), area code 707 covers 9 counties of California. Located in the Pacific time zone, area code 707 is on the same time as Los Angeles, CA.