29 C.F.R. § 779.241 Selling.
Title 29 - Labor
The statutory definition of the term “sale” or “sell” is quoted in §779.15. As long as the employee in any way participates in the sale of the goods he will be considered to be “selling” the goods, whether he physically handles them or not. Thus, if the employee performs any work that, in a practical sense is an essential part of consummating the “sale” of the particular goods, he will be considered to be “selling” the goods. “Selling” goods, under section 3(s) has reference only to goods which “have been moved in or produced for commerce by any person,” as discussed in §§779.242 and 779.243.
Title 29: Labor
PART 779—THE FAIR LABOR STANDARDS ACT AS APPLIED TO RETAILERS OF GOODS OR SERVICES
Subpart C—Employment to Which the Act May Apply; Enterprise Coverage
Employees Handling, Selling, or Otherwise Working on Goods That Have Been Moved in or Produced for Commerce by Any Person
§ 779.241 Selling.

