b'City of Dover Tuscarawas County, Ohio Notes to the Basic Financial Statements For the Year Ended December 31, 2019 Actuarial AssumptionsOPERSActuarial valuations of an ongoing plan involve estimates of the values of reported amounts and assumptions about the probability of occurrence of events far into the future. Examples include assumptions about future employment, mortality, and cost trends. Actuarially determined amounts are subject to continual review or modification as actual results are compared with past expectations and new estimates are made about the future.Projections of health care costs for financial reporting purposes are based on the substantive plan (the plan as understood by the employers and plan members) and include the types of coverage provided at the time of each valuation and the historical pattern of sharing of costs between OPERS and plan members. The total OPEB liability was determined by an actuarial valuation as of December 31, 2017, rolled forward to the measurement date of December 31, 2018. The actuarial valuation used the following actuarial assumptions applied to all prior periods included in the measurement in accordance with the requirements of GASB 74:Wage Inflation 3.25 percentProjected Salary Increases,3.25 to 10.75 percent including inflation including wage inflationSingle Discount Rate:Current Measurement Date 3.96 percentPrior Measurement Date 3.85 percentInvestment Rate of Return 6.00 percentMunicipal Bond Rate:Current Measurement Date 3.71 percentPrior Measurement Date 3.31 percentHealth Care Cost Trend Rate:Current Measurement Date 10.0 percent, initial3.25 percent, ultimate in 2029Prior Measurement Date 7.25 percent, initial3.25 percent, ultimate in 2028Actuarial Cost Method Individual Entry Age Normal In October of 2018, the OPERS Board adopted a change in the investment return assumption, reducing it from 6.5 percent to 6.0 percent.This change was effective for the 2018 valuation.Pre-retirement mortality rates are based on the RP-2014 Employees mortality table for males and females, adjusted for mortality improvement back to the observation period base year of 2006. The base year for males and females was then established to be 2015 and 2010, respectively. Post-retirement mortality rates are based on the RP-2014 Healthy Annuitant mortality table for males and females, adjusted for mortality improvement back to the observation period base year of 2006. The base year for males and females was then established to be 2015 and 2010, respectively. Post-retirement mortality rates for disabled retirees are based on the RP-2014 Disabled mortality table for males and females, adjusted for mortality improvement back to the observation period base year of 2006. The base year for males and females was then established to be 2015 and 2010, respectively. Mortality rates for a particular calendar year are determined by applying the MP-2015 mortality improvement scale to all of the previously described tables.The most recent experience study was completed for the five year period ended December 31, 2015.- 70 70 -'