2019 COLA | 3.36% By Admin on March 16, 2019 in Miscellaneous COLAs for LEOFF Plan 1 EFFECTIVE APRIL 1, 2019 – Retirement Dates Adjustment April 2, 2018 – March 31, 2019 0.00% January 1, 2018 – April 1, 2018 3.36% April 2, 2017 – December 31, 2017 6.80% Prior to April 2, 2017 3.36% Follow us on Facebook