What Is the OSHA 300 Log?

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An OSHA 300 log is used to record serious work-related illness and injuries. Employers, OSHA and the Bureau of Labor Statistics use the data.

The OSHA 300 log is an integral part of the Occupational Safety and Health Administration’s recordkeeping and reporting requirements. According to OSHA Standard 29 CFR 1904, all employers covered under OSHA must record information about work injuries and illnesses in the 300 log and transfer the information to summary Form 300A for reporting purposes. The log and summary provide information vital to employers, employees and OSHA in pinpointing and understanding hazards and improving workplace health and safety.

Objectives and Data Requirements

Form 300 has two objectives. The first is to classify recordable work-related injuries and illnesses by type. The second is to note the extent and severity of each entry. Recordable injuries and illnesses are those that result in:

  • death
  • loss of consciousness
  • one or more days away from work
  • restricted work activity
  • a job reassignment or transfer
  • medical treatment beyond simple first aid.

Each log entry has nine data input requirements:

  • A unique case number
  • The employee’s name or a “privacy case” designation if the illness or injury is a privacy concern case
  • The employee’s job title
  • Onset or injury date
  • Location of incident
  • A detailed description of the injury or illness
  • Case classification
  • The number of days an employee was off work, on restricted duty or transferred to another position
  • The type of injury or illness.

Using Injury and Illness Information

During an inspection, OSHA will review the data to help determine how safely a company is performing. Both OSHA and the Bureau of Labor Statistics use information transferred from the log to the summary form to develop industrywide and site-specific enforcement programs and compliance assistance activities.

Employers also can use the log to evaluate the effectiveness of current health and safety programs and modify them when necessary.

Additional Requirements

Any employer required to maintain the injury and illness log must post summary Form 300A from Feb. 1 through April 30 annually in a place where employees have easy access to the information. An employer also must provide a copy of the information to offsite employees and anyone else who may request it. After the posting period expires, both the 300 log and summary Form 300A must be maintained for five additional years and be made available to employees, the public and OSHA inspectors upon request.


About the Author

Based in Green Bay, Wisc., Jackie Lohrey has been writing professionally since 2009. In addition to writing web content and training manuals for small business clients and nonprofit organizations, including ERA Realtors and the Bay Area Humane Society, Lohrey also works as a finance data analyst for a global business outsourcing company.