Vendor

[Couch Potatoe]

Someone who works to a company without social security link. A way to avoid costs hiring people for a long time. A kind of reducing costs strategy.
Normally VENDOR works like normal employees but has no Vacation, Bonus , etc...
A group of workers that get some prejudice sometimes, because they work better than the regular employees exposing their weakness to their bosses.

[Donald Trump]

A vendor is frequently depicted as a force that may be conjured by management to hamper or destroy forward mobility within a company or an organization, and can never be controlled under any circumstances. Vendors provide proprietary services utilizing backward ideas, dysfunctional system components, and non-functional or non-existent technical support. Vendors gain and maintain strength by means of information repression and intense use of circular logic and evasion. “Training” is typically something of a goldbrick.
Institutions suffering from Vendor lock-in can often be compared to the poverty stricken communist state which existed under the East German occupation of 1949 – 1990 by the former Soviet Union.

[Michiko]

Drug Dealer - One whom is in the business of dealing drugs.

[Tanya Shivari]

someone who is selling something:

[Little_Girl]

A person or company offering something for sale, especially a trader in the street.