Which of the following measurements should be used to determine the effectiveness of a contractor's safety performance?

The Experience Modification Rate (EMR) is a critical measurement for evaluating a contractor's safety performance because it reflects the contractor's workers' compensation insurance history relative to the industry average. The EMR is calculated based on the number and severity of past accidents and injuries as well as the overall cost of claims compared to similar businesses within the same industry. A lower EMR indicates that a contractor has a better safety record and is less likely to incur future costs related to workplace injuries, making it a reliable indicator of safety effectiveness.

Additionally, EMR is particularly important for those companies looking to secure contracts, as a favorable EMR can demonstrate to potential clients that the contractor prioritizes safety and risk management. This not only impacts insurance premiums but also builds a reputation for the contractor in terms of reliability and accountability regarding workplace safety.