S.C. Code Regs. 9-100.327
S.C. Code Regs. 9-100.327. Evidence: Witness Fees; Oath or Affirmation; Refusal to Testify
A. Fees. Witnesses, other than employees of a state agency, summoned in an adjudication shall receive the same fees and mileage as witnesses in the courts of South Carolina.
B. Oath or Affirmation. Witnesses shall testify under oath or affirmation.