Construction Health and Safety Technician (CHST) 2025 – 400 Free Practice Questions to Pass the Exam

The incidence rate is a crucial metric in workplace safety, particularly in assessing how frequently injuries occur within a specific workforce. For 100 full-time workers, the correct approach involves calculating the total number of injuries and then adjusting that figure to reflect the incidence rate per 100 full-time equivalent workers over a standard timeframe, typically one year.

By multiplying the total number of injuries by 200,000, you are effectively standardizing the results to make them comparable across different workplaces or industries. This multiplication accounts for the fact that the rate is usually expressed per 100 full-time equivalent workers based on the assumption that they work a total of 100,000 hours in a year – since 200,000 hours represents the full-time equivalent for 100 workers (100 workers x 2,000 hours per worker). This method provides a clear and standardized measure that can be used for comparison.

In contrast, the other options do not align with the established formula for calculating the incidence rate. They either miss the critical adjustment for full-time work equivalency or employ non-standard methods for representing the injury data, which would yield incorrect or non-comparable results. The correct calculation ensures that safety metrics can accurately reflect the environment and conditions within the workplace.