What does a restaurant employee actually cost beyond the salary?

In the GCC the loaded cost carries the visa and medical, mandatory health insurance, recruitment, often accommodation and transport, training, and the end-of-service gratuity that accrues at 21 days of basic wage for each of the first five years of service. Price every rostered hour at that loaded rate, not the basic wage, or the labour percentage you are managing to is fiction.

From How Many Staff Does a Restaurant Need? The Staffing Math — the full reading, with the method behind this answer.