Around 80 workers at a South Korean garment firm in the northern province of Yen Bai suffered food poisoning after having lunch at the company on Saturday.
The workers suffered belly ache and many vomited after having lunch that served rice with bamboo sprouts, water spinach, winter melon, noodle soup, pork, fresh milk and water melon at the cafeteria of Unico Korea subsidiary at an industrial park.
Local authorities rushed the workers to hospitals and have taken food samples for testing, Tuoi Tre newspaper reported.
Mass food poisoning has been a constant threat to factory workers in Vietnam, and it has been a major cause of wildcat strikes in the country.
Labor officials said it is also one of the main reasons the country’s productivity remains among the lowest in the world.