It's probably due to our newest industry:  cannabis cultivation.  There is so much money to be made in marijuana that a lot of young people have stopped looking for traditional jobs and probably aren't that interested in unemployment benefits.  There is a lot of money to be made trimming buds and it's a job you can do at home in your spare time.  Marijuana, IMHO, is also the reason that Oregon has become the most moved to state in America.  Marijuana, legal and black market, will stimulate a lot of local spending.