S.D. Codified Laws § 60-2-10 (2026)
Anything that an employee acquires by virtue of employment, lawfully or unlawfully, during or after the term of employment belongs to the employer, excepting any compensation due the employee.
Source: CivC 1877, § 1142; CL 1887, § 3765; RCivC 1903, § 1461; RC 1919, § 1085; SDC 1939, § 17.0308; SL 2008, ch 276 , § 15.