OSHA 300 Log
What is an OSHA 300 Log?
The OSHA 300 Log is a mandatory federal record that construction employers must maintain to document all work-related injuries and illnesses that occur at their workplace during a calendar year. Officially titled “Log of Work-Related Injuries and Illnesses,” this standardized form serves as the primary tracking system for workplace incidents under OSHA guidelines.
Construction companies with 11 or more employees must complete and maintain this log, recording specific details about each incident including the nature of the injury, affected body parts, and days away from work. The log functions as both a compliance tool and a data source for identifying workplace safety trends and hazards on construction sites.
Recording Requirements and Covered Incidents
The OSHA 300 Log must capture all recordable work-related injuries and illnesses that meet specific criteria. In construction, this typically includes:
- Falls from scaffolding, ladders, or rooftops resulting in medical treatment
- Cuts, lacerations, or puncture wounds requiring stitches or professional care
- Struck-by incidents involving equipment, tools, or falling objects
- Repetitive motion injuries from prolonged tool use or material handling
- Chemical exposures, burns, or respiratory issues from construction materials
Employers have up to seven calendar days from learning of a recordable incident to enter it into the log. Each entry must include the employee’s name, job title, date of injury, and a brief description of what happened.
Compliance and Documentation Standards
Construction employers must maintain OSHA 300 Logs for five years and make them available during OSHA inspections. The log works in conjunction with Form 301 (Injury and Illness Incident Report) for detailed incident documentation and Form 300A (Summary of Work-Related Injuries and Illnesses) for annual reporting.
The completed 300A summary must be posted in a visible workplace location from February 1 through April 30 of the following year. This posting requirement ensures workers can review their site’s safety performance and understand common hazards. Accurate recordkeeping helps construction companies identify patterns, implement targeted safety measures, and demonstrate compliance during regulatory inspections or insurance audits.
Digital recordkeeping systems are acceptable as long as they maintain the same information structure and accessibility requirements as paper forms, making OSHA recordkeeping more efficient for large construction operations managing multiple job sites.
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