How to Fill Out the OSHA Log Correctly and Stay Ready for Posting Season
Learn how to fill out the OSHA log correctly with practical steps for Forms 300, 301, and 300A, plus posting mistakes to avoid.
Published: June 15, 2026 · By SafetyNet Editorial Team
Updated: June 27, 2026
Category: Industrial Safety
Frequently Asked Questions
What forms are included in the OSHA log process?
The process includes OSHA Form 300, Form 301, and Form 300A. Form 300 is the log, Form 301 is the detailed incident report, and Form 300A is the annual summary used for posting.
What injuries and illnesses should go on the OSHA log?
A case may be recordable if it is work-related and involves medical treatment beyond first aid, days away from work, restricted work, job transfer, loss of consciousness, or a significant diagnosed injury or illness. The post recommends using a consistent review checklist to confirm work-relatedness, whether it is a new case, and whether it meets OSHA recording criteria.
What are the most common OSHA log mistakes?
Common problems include classification errors, late or incomplete entries, incorrect 300A totals, mismatched information between forms, missed updates when case status changes, and posting or retention mistakes. The post also notes issues like logging a case to the wrong establishment and posting the wrong form instead of the annual summary.
How can I get ready for OSHA posting season?
Assign one recordkeeping owner for each establishment, set internal deadlines ahead of OSHA deadlines, and do a year-end review of totals and classifications. It also helps to use a posting checklist and keep documentation showing when and where Form 300A was posted.
How can SafetyNet Atlas help with OSHA recordkeeping?
The post says SafetyNet Atlas can centralize injury and illness data, standardize incident intake across sites, and reduce duplicate data entry. It can also help track case status changes, organize records for reviews, and improve visibility into posting deadlines and annual summary preparation.