Effective July 1, 2009, if your city plans to request state and federal background checks for prospective employees, you will need to contact DCI Identification Section at 605-773-3331 for supplies and instructions. The cost for these checks: $24 for state checks, and $19.25 for federal ($43.25 for both).
Computerized Criminal History (CCH) Website
Here you will find the SD Requirements for Background Checks and a sample Waiver Form mentioned in the Requirements.
From the U.S. Equal Employment Opportunity Commission (EEOC) and the U.S. Federal Trade Commission (FTC):
Background Checks: What Employers Need to Know
Background Checks: What Job Applicants and Employees Should Know