Safe harbor.
(C) Safe harbor. For purposes of paragraph (d)(2)(ii)(A)(2) of this section, an individual is treated as having performed services as an employee of the ATEO and all related ATEOs for no more than 10 percent of the total hours the individual worked as an employee of the ATEO and all related organizations during the applicable year if the employee performed no more than 100 hours of service as an employee of the ATEO and all related ATEOs during the applicable year.