How many shifts do I have to eat after working for more than nine hours?

The company's work information is as follows:

More than nine meat workers work 8 hours a day and have two public holidays every month, providing free accommodation, working meals at their own expense and social security. The company is a modern prefabricated vegetable production and processing enterprise, mainly using livestock and poultry meat and vegetables as raw materials, processing sauce and braised pork products and series of side dishes, and implementing the business model of centralized processing and production, unified cold chain distribution and franchise chain operation.