Useful for humanity. Because "useful for employee" or "useful for employer" are bad measures that allow really stupid things to exist.
This job is based on lying and/or deceiving to people to trick them into buying somethng. Whoever is paying for it is actively hurting other humans. In a way it's worse than bullshit - it's a malicious job.
I am. Before someone brings up the military - you can say that armed forces are built on malice, but the harm is at least directed towards other societies. Telemarketing is basically hurting members of your own.
This job is based on lying and/or deceiving to people to trick them into buying somethng. Whoever is paying for it is actively hurting other humans. In a way it's worse than bullshit - it's a malicious job.