S.D. Codified Laws § 62-4-26
Current with legislation signed by the governor on or before 3/6/2024
As to an employee in an employment in which it is the custom to operate throughout the working days of the year and where the situation is such that it is not reasonably feasible to determine the average weekly wages in the manner provided in § 62-4-24 or 62-4-25, the average weekly wages shall be determined by multiplying the employee's average day's earnings by three hundred, and dividing by fifty-two.
SDCL 62-4-26