Oregon gained 600 jobs in November, as the state unemployment rate edged down to 8.4%, from October’s rate of 8.6%. State Employment Economist Nick Beleiciks says that's more than 12,000 fewer than November of last year, as Oregon's rough economic recovery continues.   The Oregon Employment Division says the number of people claiming benefits has dropped 32% in the last year, and workers are using fewer of their 26 weeks of benefits.   However, the state's U-6 measure of labor under-utilization remains at 16%.