Eight states still have laws against adultery on the books, ranging from a $10 fine in Maryland to life in prison in Michigan. Massachusetts is one of those states; under MGL c. 272  s.14, adultery is punishable by imprisonment in the state prison for up to three years, jail for up to two years, or a maximum fine of $500. The last prosecution in MA was in 1980, and the law was upheld by the SJC in 1983.