Enter the lost work day rate, number of lost work days, and total number of hours worked into the calculator to determine the missing variable.

Lost Work Day Calculator

Lost Work Day Rate
Cases to Lost Days

Enter any 2 values to calculate the missing variable

Lost Work Day Formula

The following formula is used to calculate the lost work day rate for a given number of lost work days and total number of hours worked.

R = (D / H) * 200000

Variables:

  • R is the lost work day rate
  • D is the number of lost work days
  • H is the total number of hours worked

To calculate the lost work day rate, divide the number of lost work days by the total number of hours worked. Multiply the result by 200,000 to get the rate.

What is a Lost Work Day?

A lost work day is a day on which an employee is unable to perform their job duties due to a work-related injury or illness. This metric is often used in workplace safety and health programs to measure the impact of workplace incidents on productivity. The lost work day rate is a standardized measure that allows organizations to compare their safety performance over time or against industry benchmarks.

How to Calculate Lost Work Day?

The following steps outline how to calculate the Lost Work Day Rate.


  1. First, determine the number of lost work days (D).
  2. Next, determine the total number of hours worked (H).
  3. Next, calculate the lost work day rate using the formula R = (D / H) * 200000.
  4. Finally, calculate the Lost Work Day Rate.
  5. After inserting the values and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

Number of lost work days (D) = 10

Total number of hours worked (H) = 50000