2024 rates for workers' compensation
2024 base rates by business type and classification code
2024 hourly rates by classification code and fund
- 2024 base rates by classification code and fund (PDF)
- 2024 base rates by classification code and fund (Excel)
2024 experience rating parameters
- 2024 WAC 296-17-880 Table 2 Primary and Excess Credibility Values (Word)
- 2024 WAC 296-17-885 Table 3 Expected Loss Rates and Primary Ratio by Risk Classification and Fiscal Year Expected Loss Rates in Dollars per Worker Hour (Word)
- 2024 WAC 296-17-890 Table 4 Maximum Experience Modifications for Firms with no Compensable Accidents (Word)
2023 rates for workers' compensation
2023 base rates by business type and classification code
2023 hourly rates by classification code and fund
- 2023 base rates by classification code and fund (PDF)
- 2023 base rates by classification code and fund (Excel)
2023 experience rating parameters
- 2023 WAC 296-17-880 Table 2 Primary and Excess Credibility Values (Word)
- 2023 WAC 296-17-885 Table 3 Expected Loss Rates and Primary Ratio by Risk Classification and Fiscal Year Expected Loss Rates in Dollars per Worker Hour (Word)
- 2023 WAC 296-17-890 Table 4 Maximum Experience Modifications for Firms with no Compensable Accidents (Word)
2022 rates for workers' compensation
2022 base rates by business type and classification code
2022 hourly rates by classification code and fund
- 2022 base rates by classification code and fund (PDF)
- 2022 base rates by classification code and fund (Excel)
2022 experience rating parameters
- 2022 WAC 296-17-880 Table 2 Primary and Excess Credibility Values (Word)
- 2022 WAC 296-17-885 Table 3 Expected Loss Rates and Primary Ratio by Risk Classification and Fiscal Year Expected Loss Rates in Dollars per Worker Hour (Word)
- 2022 WAC 296-17-890 Table 4 Maximum Experience Modifications for Firms with no Compensable Accidents (Word)
2021 rates for workers' compensation
2021 base rates by business type and classification code
2021 hourly rates by classification code and fund
- 2021 base rates by classification code and fund (PDF)
- 2021 base rates by classification code and fund (Excel)
2021 experience rating parameters
- 2021 WAC 296-17-880 Table 2 Primary and Excess Credibility Values (Excel)
- 2021 WAC 296-17-885 Table 3 Expected Loss Rates and Primary Ratio by Risk Classification and Fiscal Year Expected Loss Rates in Dollars per Worker Hour (Excel)
- 2021 WAC 296-17-890 Table 4 Maximum Experience Modifications for Firms with no Compensable Accidents (Excel)
2020 rates for workers' compensation
2020 base rates by business type and classification code
2020 hourly rates by classification code and fund
- 2020 hourly rates by classification code and fund (PDF)
- 2020 hourly rates by classification code and fund (Excel)
2020 experience rating parameters
- 2020 WAC 296-17-880 Table 2 Primary and Excess Credibility Values (Excel)
- 2020 WAC 296-17-885 Table 3 Expected Loss Rates and Primary Ratio by Risk Classification and Fiscal Year Expected Loss Rates in Dollars per Worker Hour (Excel)
- 2020 WAC 296-17-890 Table 4 Maximum Experience Modifications for Firms with no Compensable Accidents (Excel)
2019 rates for workers' compensation
2019 composite* hourly base rates by risk classification
2019 hourly base rates by risk classification and fund
- 2019 hourly rates by classification code and fund (Excel)
- 2019 hourly rates by classification code and fund (PDF)
2019 experience rating parameters
- 2019 WAC 296-17-880: Table 2--Primary and excess credibility values (Excel)
- 2019 WAC 296-17-885: Table 3--Expected loss rates and primary ratio by risk classification and fiscal year expected loss rates in dollars per worker hour (Excel)
- 2019 WAC 296-17-890: Table 4--Maximum experience modifications for firms with no compensable accidents (Excel)
2018 rates for workers' compensation
2018 composite* hourly base rates by risk classification
2018 hourly base rates by risk classification and fund
- 2018 hourly rates by classification code and fund (Excel)
- 2018 hourly rates by classification code and fund (PDF)
2018 experience rating parameters
- WAC 296-17-875: Table 1--Primary losses for selected claim values (Excel)
- 2018 WAC 296-17-880: Table 2--Primary and excess credibility values (Excel)
- 2018 WAC 296-17-885: Table 3--Expected loss rates and primary ratio by risk classification and fiscal year expected loss rates in dollars per worker hour (Excel)
- 2018 WAC 296-17-890: Table 4--Maximum experience modifications for firms with no compensable accidents (Excel)
Rate change history
- Average standard premium rates (Excel)
- Average standard premium rates (PDF)
- 15-year base rate history (Excel)
*The composite rate is the sum of the individual base rates assuming an experience factor of 1.0.
Questions?
Contact your account manager with questions. Your account manager's phone number is on your quarterly report. You can also call 360-902-4817 for general information or to be directed to your account manager.