First of all, he will write you an invitation letter, explaining that they need people like you there.
But it depends on whether he is willing to apply for you through employer nomination.
But if such an application
Ask his restaurant to be strong ~ and have an economic foundation ~
Although you can apply for immigration through employer nomination.
But that boss can't apply for any similar person for five years, and the government benefits will be reduced accordingly when he gets old ~
Therefore, it is generally necessary for you to secretly give the boss a proportion of money.
And legally speaking, you can't work anywhere except that restaurant for five years ~ ~ ~
The application time takes about half a year from the submission of materials to the approval ~