 When a government regulation effects a taking of private property by such excessive regulation, the owner may initiate inverse condemnation proceedings to recover the just compensation for the taking of his or her property, provided that procedural hurdles have been overcome.In recent years, the concept of regulatory taking has been used more loosely—outside the constitutional sense—by property rights groups, extending to include regulations that reduce property values by lesser amounts.Ballot initiatives based on this interpretation (such as Oregon's Measure 37) have been advanced in at least seven states in the years 2000 to 2006.