In most companies, when those testers work by publishers, they were consigned to the game developer site, and are deployed in the office of his employer. Many students work part time as testers. Companies generally hire in late summer or early autumn. These are the times when some sort of crisis period of the game to be completed and shipped before the feast begins.
...Regardless of all the risks associated with the work and working time required, do not pay much. In fact, wages are generally paid on a hourly basis. Since most employees are employed on a temporary basis, are not entitled to benefits, and even holidays. Most testers treat the job as a stop-gap arrangement, after which they can get a better job in the gaming industry.
The people who eventually want to work in the gaming industry can be used as a stepping stone.