An administrative rule is an agency's written regulation, statement, standard, policy, ruling, or instruction that has the effect of law. A state agency writes rules under authority of state statute, the Michigan Administrative Procedures Act, the Michigan Constitution, and applicable federal law.

MCL 24.207 defines the term "rule" as follows: Rule

Forms for Administrative Rules
Administrative Rules Process Summary
Request for Rule-Making
Regulatory Impact Statement and Cost Benefit Analysis
Guideline
Adopted Guideline
Agency Report to the Joint Committee on Administrative Rules
Legislative Service Bureau Style