S.D. Codified Laws § 3-18-15.1
Grievance procedures to be established
The governing officer or board of each governmental agency shall enact, by agreement, ordinance, rule, or resolution, and make known to its employees a procedure which its employees may follow for prompt informal dispositions of their grievances.
Source: SL 1970, ch 27, § 1; SL 1993, ch 375, § 5.