I worked for a call center for a few years, first job once I was done with school. A lot of the people who were hired were simply shipped in by the local unemployment agency. After being unemployed for X days, the government simply offered to pay parts of their salaries for six months as a means to stimulate local employers to hiring more people.

The result was that various firms like Teleperformance and the like placed call centres in areas of high unemployment, and thousands of people were put on the phone lines with insufficient training, made to work under sub-par conditions for six months, before getting promptly sacked for arbitrary reasons just before their probation period was over.

These are just businesses abusing the system. Not accepting the job offers would have meant financial ruin. The people who are subjected to this usually have no other options available, and they're then run into the ground and promptly discarded once they were no longer useful.

Call centers (in Central America at least) are the most readily available jobs that allow the worker to achieve a middle class lifestlye.

Their entry level positions require only a High School degree and fluent English. And pay more than what a Master Degree could earn in other companies.

For example, in El Salvador they pay twice than other jobs, always comply with overtime and night working hours payment rules, offer English improvement classes, University compensation, and offer private medical insurance as a benefit. This benefits are higher than what most small/mid businesses can offer.

Employees don't have much choice, faced with the decision of turning on a webcam for a $800+ per month job + benefits, or working in another job for minimum wage for $340 per month (and working on site under CCTV)