; (B) the period of time worked for which the service provider payee is compensated by the service recipient payor is less than 30 days per calendar quarter; and (C) the service provider payee is not required to provide the goods or services exclusively for the service recipient payor. (13) Period of time worked The term period of time worked includes any specified period of time worked, including hourly, daily, weekly, bi-weekly, bi-monthly, monthly, quarterly, or annually periods of time. (14) Money The term money means any legal tender as defined in section 5103 of title 31, United States Code. (15) Sales commission The term sales commission means compensation based on sales made by the service provider payee or by individuals managed, supervised, advised, or recruited by the service provider payee. (16) Secretary The term Secretary means the Secretary of Labor. (17) Service provider payee The term service provider payee means an individual providing goods or services to a service recipient payor in return for compensation paid to the individual by the service recipient payor. (18) Service recipient payor The term service recipient payor means a person receiving goods or services from a service provider payee in return for compensation paid by the person to the service provider payee. (19) Substantial economic relationship The term substantial economic relationship means an economic relationship between a service recipient payor and a service provider payee where— (A) the service provider payee is a natural person; (B) more than 75 percent of the compensation to the service provider payee by the service recipient payor is based on a period of time worked; (C) the service recipient payor determines the hours of work