In deriving a contractor's EMR, which factor is most important?

In deriving a contractor's EMR, which factor is most important?

• A. Cost of Past Accidents
• B. Number of Past Workers
• C. Total Project Value
• D. Current Insurance Rate

Answer: (A)

Experience Modification Rate is a measure used by workers’ compensation insurers to adjust a contractor’s premium based on its past claim performance relative to payroll. The factor that most influences this rate is the total cost of past accidents. Why? Because EMR is designed to reflect not just how many injuries occurred, but how costly they were. High-cost claims signal greater expected future losses, which pushes the EMR upward and leads to higher premiums. The number of past workers and the value of past projects can influence the context (through payroll and exposure), but they are not the primary drivers of EMR. The current insurance rate is a result of the EMR and other underwriting factors, not the determinant used to derive the EMR itself. So, a history of expensive injuries indicates higher risk and increases the EMR more than simply having more minor incidents, making the cost of past accidents the best answer.

Experience Modification Rate is a measure used by workers’ compensation insurers to adjust a contractor’s premium based on its past claim performance relative to payroll. The factor that most influences this rate is the total cost of past accidents. Why? Because EMR is designed to reflect not just how many injuries occurred, but how costly they were. High-cost claims signal greater expected future losses, which pushes the EMR upward and leads to higher premiums.

The number of past workers and the value of past projects can influence the context (through payroll and exposure), but they are not the primary drivers of EMR. The current insurance rate is a result of the EMR and other underwriting factors, not the determinant used to derive the EMR itself.

So, a history of expensive injuries indicates higher risk and increases the EMR more than simply having more minor incidents, making the cost of past accidents the best answer.