Here's a statement from the state's Employment Security department that tries to explain the confliction news.
OLYMPIA – December’s labor statistics from the federal Bureau of Labor Statistics once again produced conflicting data about what’s happening in Washington’s economy.
According to the bureau’s monthly survey of Washington households, the estimated unemployment rate dropped from 8.7 percent in November to 8.5 percent in December. This was the lowest since February 2009, when the unemployment rate was 8.3 percent. More