Estimated WC Rate Index values for contiguous states, 2002-2004
[1] 2002[2] 2003* 2004*[3]
California 5.23 6.38 5.45
Idaho 2.37 2.28 2.45
Nevada 3.02 3.07 2.69
Oregon 2.06 2.06 2.06
Washington 1.65 2.13 2.34
Note: 2003 and 2004 rate indices are projections based on 2002 manual rate indices and filed pure premium rate changes through 12-1-03.
Values are based on $100 of payroll: 2.06 equals $2.06 per $100 of payroll. 
Including the 9.8% rate increase, Washington's 2004 rate is projected to be approx. 14% higher than Oregon's. 
Source: Oregon Department of Consumer & Business Services
Oregon Department of Consumer & Business Services 2002 report

[1]
Derek R Reinke:
These do not match the numbers from the 2000 DCBS Rate Ranking Study, because they are derived from the 2002 data.
[2]
Derek R Reinke:
From the DCBS Rate Ranking Study.
[3]
Derek R Reinke:
Projected