Another useful measurement for risk-management purposes might be to track the reasons for employee resignations from the company. This provides information for improvements to whatever area is the source of resignations by valued employees to reduce future recruiting and training costs and prevent unwanted turnover.Another example of a useful metric that measures program effectiveness is OSHA’s recordable case rate formula to calculate the incidence rate of ergonomic injuries before the program is implemented and taking periodic measures as the program progresses to determine the reduction in injuries. The recordable case rate formula uses a base of 100 full-time employees working 40 hours per week, 50 weeks per year, or 200,000 hours. Figure 8.1 illustrates the formula for calculating the ergonomic injury rate before implementation of the program, when 53 injuries occurred, and after implementation, when the injuries were reduced to 35. The example assumes that an individual employee works 2,000 hours per year (40 hours per week times 50 weeks per year).