Thu Trang traveled to Ho Chi Minh City, Vietnam, in 2019, ecstatic to get a job at a factory. She worked eight-hour shifts and was guaranteed overtime pay, and the wages were nearly triple what she had made as a farmer back home.

But during a COVID-19 outbreak this summer, the factory where she worked making Adidas, Converse and New Balance shoes virtually shut down. She and her co-workers were forced to live in a cramped apartment for nearly three months, subsisting on a diet of rice and soy sauce. In October, when restrictions loosened as global supply chain issues surged, Thu Trang decided she would pack up and return to her home province, Tra Vinh.

Her manager promised her higher wages, but she did not bother to find out how much.