The minimum age to work at Texas Roadhouse depends on the position: 16 years old: This is the general minimum age requirement. At 16, you can typically be hired as a host or hostess. 18 years old: You must be at least 18 to work as a server or on the kitchen staff (cooks, prep cooks, etc.). 21 years old: Bartenders must be at least 21 years old due to age restrictions on serving alcohol.