Investigative journalists from ProPublica did research on a company called Arise Virtual Solutions and its abhorrent practices. This company allows large American businesses to outsource their customer service:

Arise not only creates separation between its corporate clients and individual agents, it also allows those companies to quickly add or subtract workers. In March, Instacart needed all kinds of agents. By May, those jobs had largely disappeared. “I was there for a week. We’re disposable,” one Florida agent dropped from Instacart assignments told ProPublica.

Read their article here. For these piece ProPublice partnered with NPR’s Planet Money, who produced a podcast on the same topic.