Texas Health and Safety Code - HEALTH & SAFETY § 437.0075. Food Managers in Certain Populous Counties

(a) A county with a population of at least four million may require a certified or trained food manager to be on duty during the operating hours of a food establishment.

(b) The training required of food managers can be no more extensive than that specified under Subchapter D, Chapter 438.  1

(c) A food establishment that handles only prepackaged food and does not prepare or package food may not be required to have a certified food manager under this section.