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Removing the Mystique of the OSHA 300 log

- March 30, 2015 by Thomas Jolliff, ARM, CEES, ALCM (View all posts by Thomas)

Every New Year brings resolutions, hope, anticipation… and questions about the OSHA 300 log.

While the OSHA log is a relatively simple form to fill out, there are some nuances that sometime become barriers for employers. But don’t fret! I am here to help break down the mystique of completing your 300 log.

The log consists of three parts:

  • Form 300 – Log of Work-Related Injuries and Illnesses
  • Form 300A – Summary of Work-Related Illnesses and Injuries
  • Form 301 – Injury and Illness Incident Report.

I have separated the explanation of each part into three posts, so check back to learn about the 300A and 301.  This post focuses on the 300 Log.

Form 300 classifies work-related injuries and illnesses, and details the extent and severity of each case. Employers with 11 or more employees are required to use the 300 form to record information about injuries and illnesses including how it occurred and a brief description of what occurred. Your information should be entered on the 300 form within seven calendar  days of receiving information (don’t wait until the end of the year).

What do you record on the 300 form?

This is one of the most common questions related to completing the 300 Log.  What do you record in the form?  Let’s break it down.  You should record any work-related injuries or illnesses that result in:

  • Death
  • Loss of consciousness
  • Days away from work
  • Restricted work activity or job transfer
  • Medical treatment beyond first aid
  • Work-related injuries and illnesses diagnosed by a physician or licensed health care professional

It’s important to remember that the 300 form should not be posted for employees to review.  The 300 form includes personal information from your employees and is protected by HIPAA. The form that you post is the 300A Summary, and we’ll examine that next.



“OSHA Injury and Illness Recordkeeping and Reporting Requirements.” United States Department of Labor. OSHA.gov, n.d. Web. 13 Feb 2015.  https://www.osha.gov/recordkeeping/index.html

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