Most restaurants and caterers that serve sushi hire Japanese chefs to prepare it.
A spokeswoman for the restaurant said the workers walked off their jobs, and the restaurant has hired 50 replacements.
She couldn't even get a job as a pastry chef until a woman who owned a restaurant hired her.
Since June, its restaurants have hired 5,000 people.
After many months without an executive chef, the restaurant hired Victor Everitt about six weeks ago.
Stores, restaurants, construction companies and trading houses all hired more workers.
A makeshift sign on pink paper covered the hole and announced, in Chinese, that the restaurant was hiring.
A block away, two popular coffee houses and an outdoor restaurant hired their own security men this week.
Some restaurants hire consultants and big-name designers to create a personality.
Dana had been trying to get a job as a waiter, but the restaurants were hiring only experienced help.