S.D. Codified Laws § 62-4-37
Current with legislation signed by the governor on or before 3/6/2024
No compensation may be allowed for any injury or death due to the employee's willful misconduct, including intentional self-inflicted injury, intoxication, illegal use of any schedule I or schedule II drug, or willful failure or refusal to use a safety appliance furnished by the employer, or to perform a duty required by statute. The burden of proof under this section is on the defendant employer.
SDCL 62-4-37