Example 1. Salesman A's principal business activity is the solicitation of orders from retail pharmacies on behalf of the X Wholesale Drug Company. A also occasionally solicits orders for drugs on behalf of the Y and Z Companies. A is within this occupational group with respect to his services for the X Company but not with respect to his services for either the Y Company or the Z Company.
Example 2. Salesman B's principal business activity is the solicitation of orders from retail hardware stores on behalf of the R Tool Company and the S Cooking Utensil Company. B regularly solicits orders on behalf of both companies. B is not within this occupational group with respect to the services performed for either the R Company or the S Company.
Example 3. Salesman C's principal business activity is the house-to-house solicitation of orders on behalf of the T Brush Company. C occasionally solicits such orders from retail stores and restaurants. C is not within this occupational group.
26 C.F.R. §31.3121(d)-1