Occupier

[Rihanna]

One who follows an employment; hence, a tradesman.

[Britney]

someone who sits in the stall for longer than necessary to feel safe from the invading 99ers who are bored, uneducated people whos unemployment is running out.

[Mark Zuckerberg]

A person or company residing in or using a property as its owner or tenant, or (illegally) as a squatter.