Minn. Stat. § 43A.325

The commissioner of management and budget must develop and make available to appointing authorities in the executive branch a best practices policy for conducting investigations in which the appointing authority compels its employees to answer questions about allegedly inappropriate activity. The best practices policy must be designed to facilitate effective investigations, without compromising the ability to prosecute criminal cases when appropriate. Each appointing authority must follow the best practices policy or, in consultation with the attorney general, must develop its own policy for conducting these investigations.