29 C.F.R. § 779.111 Buyers and their assistants.
Title 29 - Labor
Buyers and their assistants, employed by retail businesses, as a regular part of their duties, generally travel across State lines, or use the mails, telegraph, or telephone for interstate communication to order goods; or they regularly send or receive, across State lines, written reports, messages or other documents. These activities of such employees constitute engagement “in commerce” within the meaning of the Act.
Title 29: Labor
PART 779—THE FAIR LABOR STANDARDS ACT AS APPLIED TO RETAILERS OF GOODS OR SERVICES
Subpart B—Employment to Which the Act May Apply: Basic Principles and Individual Coverage
Employees Engaged in Commerce or in the Production of Goods for Commerce
§ 779.111 Buyers and their assistants.

