Dressers are absolutely allowed to wear short sleeves, and they don't have direct contact with customers.

The waitresses who serve food should not wear short-sleeves, while the waitresses who welcome customers should wear short-sleeves.

The food and the service is a long time can blow the air conditioning, they wear long-sleeved of course, the food handler is to be in the kitchen and the hall back and forth, wear short-sleeved justification ~