Minn. Stat. § 490.125: MANDATORY RETIREMENT.

Subdivision 1. Mandatory retirement age.

Except as otherwise provided in this chapter, a judge shall terminate active service as a judge on the judge's mandatory retirement date.

Subd. 2. Exception.

Any judge in office on December 31, 1973 who shall have attained 70 years of age on or prior to such date shall retire upon the expiration of the term of office of such judge.