S.C. Code Ann. § 41-27-230
"Employment" means:
(1) Any service performed prior to January 1, 1978, which was employment as defined in this subsection prior to such date and, subject to the other provisions of this subsection, service performed after December 31, 1977, for wages under a contract of hire, written or oral, expressed or implied, including service in interstate commerce by:
(c) Any individual other than an individual who is an employee under subdivision (a) or (b) who performs services for remuneration for any employing unit:
(ii) As a traveling or city salesman, other than as an agent-driver or commission-driver, engaged upon a full-time basis in the solicitation on behalf of, and the transmission to, his principal (except for side-line sales activities on behalf of some other person) of orders from wholesalers, retailers, contractors, or operators of hotels, restaurants or similar establishments for merchandise for resale or supplies for use in their business operations; provided, that for purposes of subparagraph (1)(c), the term "employment" shall include services described in (i) and (ii) above performed after December 31, 1971, only if:
A. The contract of service contemplates that substantially all of the services are to be performed personally by such individual;
B. The individual does not have a substantial investment in facilities used in connection with the performance of the services (other than in facilities for transportation); and
C. The services are not in the nature of a single transaction that is not part of a continuing relationship with the person for whom the services are performed.
(2)
(3) Service performed after December 31, 1971, by an individual in the employ of a religious, charitable, educational or other organization but only if the following conditions are met:
(5) Service performed after December 31, 1977, by an individual in agricultural labor as defined in Section 41-27-120 of this Title when:
(a) Such service is performed for a person who:
(c) For the purposes of this paragraph any individual who is a member of a crew furnished by a crew leader to perform service in agricultural labor for any other person shall be treated as an employee of such crew leader:
(e) For the purposes of this paragraph, the term "crew leader" means an individual who:
(7) The term "employment" shall include the service of an individual who is a citizen of the United States, performed outside the United States after December 31, 1971 (except in Canada, and in the case of the Virgin Islands after December 31, 1971, and prior to January 1 of the year following the year in which the United States Secretary of Labor approves the unemployment compensation law of the Virgin Islands under Section 3304(a) of the Internal Revenue Code of 1954) in the employ of an American employer (other than service which is deemed "employment" under the provisions of Section 41-27-230(9) and Section 41-27-230(11) of this section or the parallel provisions of another State's law), if:
(b) The employer has no place of business in the United States, but,
(9) The term "employment" shall include an individual's entire service, performed within or both within and without this State, in the United States if:
(b) The service is not localized in any state but some of the service is performed in this State and:
(c) The service, wherever performed, is within the United States or Canada, if: