S.C. Code Ann. § 41-29-180
The Commission shall endeavor, both for the relief of the clerical work of employers and its own office, to confine reporting to the minimum necessary for the proper administration of the law, and, except for necessary separation, low earnings, special reports or notices, or wage and employment reports required under Section 41-29-140, it shall not require reports as to the earnings of individual employees more frequently than quarterly.