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2018 Premium rates

Building on a 6.2 per cent reduction to the average premium rate in 2017, the Board of Directors has approved a 3.3 reduction to the average premium rate for 2018. This brings the total cumulative reduction to the average premium rate since 2016 to 9.3 per cent.

The reduction will bring the average 2018 premium rate down to $2.35 for every $100 of insurable earnings from $2.43 in 2017.

The WSIB is funded solely by premium revenue. So, when setting premium rates for 2018, we had to incorporate costs for legislation related to chronic mental stress (CMS). We did so by considering the number of traumatic mental stress and PTSD claims across each industry class over the past 10 years.

Were we to distribute these costs at the rate group level, some groups would see substantial premium rate increases. We want to ensure that businesses have premium rate stability so that they can plan for the future.

In order to ensure stability at the rate group level, we have decided to:

  • only require increases that relate to CMS legislation
  • cap increases at 5 per cent
  • allow decreases up to 7.6 per cent

We have developed a Premium Rate 101 (PDF) that provides an overview of how premium rates are calculated. We have also developed a Q&A on CMS and 2018 Premium Rates (PDF).

See our 2018 premium rates.

Calculate your 2018 premium using our Premium Estimator.

Technical rate sessions

Please note: Registration for all technical rate sessions is now closed. If you have any questions, please contact technicalratesessions@wsib.on.ca.

If you are an industry association interested in arranging a session for your membership, please contact technicalratesessions@wsib.on.ca.

2018 Premium rates table

The WSIB Maximum Insurable Earnings Ceiling for 2018 is $90,300 compared to $88,500 in 2017. Changes to the Maximum Insurable Earnings Ceiling are directly linked to changes in average earnings in Ontario as measured by Statistics Canada, and provisions under the Workplace Safety and Insurance Act.

You can also download a printable copy of our 2018 premium rates (PDF).

* Please note that these rates have been updated since announced at the Annual General Meeting to help ensure stability for rate groups.

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