For rules relating to the line of business limitation, see §1.132-4. For purposes of this section, a service will not be considered to be offered for sale by the employer to its customers if that service is primarily provided to employees and not to the employer's customers.
Example. Assume that a commercial airline permits its employees to take personal flights on the airline at no charge and receive reserved seating. Because the employer forgoes potential revenue by permitting the employees to reserve seats, employees receiving such free flights are not eligible for the no-additional-cost exclusion.
26 C.F.R. §1.132-2