Example 1. Employer B, who operates a store and a farm, employs A to perform services in connection with both operations. The remuneration paid A for services on the farm is excepted as remuneration for agricultural labor, and the remuneration for services performed in the store constitutes wages. Employee A is paid on a monthly basis. During a particular month, A works 120 hours on the farm and 80 hours in the store. None of the remuneration paid by B to A for services performed during the month is deemed to be wages, since the remuneration paid for less than one-half of the services performed during the month constitutes wages. During another month A works 75 hours on the farm and 120 hours in the store. All of the remuneration paid by B to A for services performed during the month is deemed to be wages since the remuneration paid for one-half or more of the services performed during the month constitutes wages.
Example 2. Employee C is employed as a maid by D, a physician, whose home and office are located in the same building. The remuneration paid C for services in the home is excepted as remuneration for domestic service, and the remuneration paid for her services in the office constitutes wages. C is paid on a weekly basis. During a particular week C works 20 hours in the home and 20 hours in the office. All of the remuneration paid by D to C for services performed during that week is deemed to be wages, since the remuneration paid for one-half or more of the services performed during the week constitutes wages. During another week C works 22 hours in the home and 15 hours in the office. None of the remuneration paid by D to C for services performed during that week is deemed to be wages, since the remuneration paid for less than one-half of the services performed during the week constitutes wages.
26 C.F.R. §31.3402(e)-1