Prior to the 2003 Minnesota legislative session, any person who was not a licensed high voltage electrician and who conducted electrical work of any kind (including low voltage lighting and irrigation work) for others with or without pay, was breaking the law.

At the 2003 Minnesota legislative session, a law passed requiring persons who perform low voltage work to become licensed as Power Limited Technicians. Companies that employ Power Limited Technicians must register with the State as Technology Systems Contractors –even if the company is an owner-operator. The Minnesota Department of Labor and Industry administers this license.