Workers wearing pink overalls walked off the job at Top Form Underwear after a Cantonese-speaking boss verbally abused a Mandarin-speaking worker who didn't understand instructions, the New Express reported.
The strike in the southern metropolis of Shenzhen is the latest in a string of actions driven by worker dissatisfaction in the Pearl River Delta, known as the workshop to the world for the millions of Chinese migrant workers employed by factories there.
Last week, more than 7 000 workers at a factory in nearby Dongguan making New Balance, Adidas and Nike shoes went on strike, clashing with police in a protest over layoffs and wage cuts.
Workers at Top Form had earlier complained of management bullying and about the shift in February from a regular base monthly salary of 500 yuan ($79) plus overtime to a system that paid them per bra they completed.
The piecework system prevented them from making enough money to meet the rising cost of living, they said.
Telephone calls to the factory and to its Hong Kong-based and publicly listed owner, which has the same name, went unanswered. The local government did not respond to an AFP request for information.