2
6686

# How to calculate Man hours

Man hours is the total hour worked over a specific period of time. As a health and safety personnel you need to understand how to calculate man-hour since it is necessary for determining the health and Safety performance.

Man-hours are a crucial element in submitting a winning project bid as well as charging for work completed. Because labor constitutes such a large portion of any contract work, estimating and reporting hours accurately is crucial to having a successful business.

How to calculate man hours formula =

Total hours work a day x Total number of workers x Total numbers of days worked over the specific period of time

Example:

Consider that:

• Number of hours worked a day: 8 hours
• Total number of workers: 20 workers
• Specific period of time: 3 months – 90 days (January – March), minus weekends and public holidays.

Assuming that weekend and public holidays = 24 days

We subtract 24 from the number of days within the 3 months

90 – 24 = 66 days

Hence;

Man-hour = 8 x 20 x 66

= 10,560 hours.

From the example above, man-hour is calculated from simple parameter.

You can substitute the values with your organization’s specific value to determine the man-hour for a specific period for your organization.

Note that: Man-hour is an integral factor in measuring Health and safety performance.

An organization that records 5 LTI in every 10,000 man-hour every 3 months and the organization that record 10 LTI in every 100,000 man-hour every 3 month poses different Health and safety performance level. Judging by the man-hour and the LTI recorded, the second organization has a better Health and Safety performance.

This is the essence of knowing the man-hour.

Suggested Articles

See how LTIFR is calculated from LTI (Lost time injury)

TRIR Calculation – Easy way to calculate TRIR

DART Rate: What it means and how to calculate

Incident: Definition and types

The salient relationship between Hazard – Risk – Accidents

Responsive
Previous articleAPPLY – SSH&E Environmental Technician Portland
A passionate Health and Safety professional with a good level of field experience and relevant certifications including NEBOSH, OSHA, etc certifications. An Health and Safety activist who believes in the growth and continual improvement of the profession. He is going all out to create awareness and safe precious lives.