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Your Guide to OSHA 300A Posting and Recordkeeping Rules

Learn the essentials of OSHA 300A posting and recordkeeping rules. Understand who must post, what to include, and how to stay compliant with workplace injury and illness reporting requirements.

LearnTastic
10 16 2025

The Occupational Safety and Health Administration (OSHA) requires employers in both the general and construction industries to maintain records of workplace injuries and illnesses. This is done through OSHA Forms 300, 300A, and 301. Among these, OSHA 300A is the most important because it provides a yearly summary of all reported cases. Knowing when does the OSHA 300A need to be posted is crucial for compliance, as missing deadlines can result in penalties. This guide explains the posting requirements, how OSHA 300A differs from other forms, and key details employers must know.

Why is the OSHA Recordkeeping System Important?

OSHA’s records help employers, workers, and the administration evaluate the safety of a workplace, identify biological or physical hazards, and implement strategies to prevent future incidents. With over 2.6 million injury and illness cases reported in the U.S. in 2023, this helps create a proactive safety culture.

INFOGRAPHIC:

The OSHA recordkeeping system primarily involves three forms:

OSHA Form	Purpose
OSHA 300	A detailed log of work-related injuries and illnesses.
OSHA 301	An individual report with specifics about each incident.
OSHA 300A	A summary of the year’s recordable incidents that must be posted for employees to see.

What Is the OSHA 300A Form?

The OSHA 300A form is a summary of work-related injuries and illnesses that occurred at a workplace during the previous calendar year. It includes total fatalities, days away from work, job transfer or restriction cases, and all types of injuries and illnesses (e.g., skin disorders, respiratory conditions).

The 300A form does not include the names of injured employees. It only showcases aggregate data to provide a broad overview of a facility's safety performance over the course of a year.

When Does the OSHA 300A Need to Be Posted?

The OSHA 300A summary must be posted from February 1 to April 30 of each year. For example, the summary that you need for 2024 must be displayed from February 1, 2025, through April 30, 2025.

OSHA 300A also has some primary goals, which include:

Promoting Transparency

The OSHA 300A form ensures transparency in workplace safety by asking employers to post a summary of injuries and illnesses. It aims to make sure that employees are aware of the health and safety risks in their work environment.

Encouraging Accountability

The annual posting requirement encourages employers to take a closer look at their safety performance. The data summaries and reviews can reveal trends and areas needing improvement. This leads to the introduction of more proactive safety measures.

Facilitating OSHA Inspections

When OSHA inspects a facility, the 300A form provides a quick reference to assess safety issues. If the summary shows a high number of incidents, it may trigger a more detailed investigation.

OSHA 300A Vs. 300 and 301: What’s the Difference?

All three OSHA forms 300, 300A, and 301 are part of the injury and illness recordkeeping system. However, they serve different functions, which you must know, especially if you are a part of the general or construction industry. Here’s a summarized overview of their comparison to help you make better decisions:

Form	Includes	Posting Requirement
OSHA 300	Names, job titles, nature of injury, days missed, job transfer, etc.	For internal records only
OSHA 301	Specifics of each case: how, when, and where the incident occurred	Kept confidential
OSHA 300A	Totals for cases, days away, job restrictions, and workforce info	Must be posted February 1 to April 30

What are the OSHA 300 Posting Requirements?

Most private-sector employers with more than 10 employees must complete and post the 300A form annually. Here’s an overview of the posting requirements for these professionals:

Category	OSHA 300 Log	OSHA 300A Summary
Form Name	OSHA Form 300	OSHA Form 300A
Purpose	To log each individual work-related injury or illness	To summarize the total number of reportable incidents from the OSHA 300 Log
Details Included	Names, job titles, injury type, body part affected, days away from work, etc.	Annual totals for injuries, illnesses, missed workdays, job restrictions, etc.
Posting Requirement	Not required to be posted	Must be posted from Feb 1 to Apr 30
Access Level	Internal use, available upon request to OSHA, employees, or representatives	Publicly posted and visible to all employees
Retention Requirement	Must be retained for 5 years	Must be retained for 5 years

6 Common Mistakes to Avoid During OSHA 300A Posting

Knowing what is the purpose of the 300 log is not enough for employers. They must also demonstrate their transparency about workplace safety by maintaining the mandatory posting. Below are some of the common mistakes to avoid in this context:

Posting the Wrong Form

Posting the OSHA 300 Log instead of the OSHA 300A Summary is one of the most frequent errors. The 300 Log contains sensitive employee information and is not meant for public display. This means organizations must post only the 300A Summary.

Posting Outside the Required Dates

Failing to post the form between February 1 and April 30 is considered a violation of compliance requirements. Some employers either post too early or forget to take it down after the deadline. Sticking to the official posting window can also help you avoid all kinds of legal complications in this case.

Not Getting the Right Signature

The 300A Summary must be certified by a company executive, such as a CEO, CFO, or senior manager. The form is considered invalid and non-compliant if someone without the authority signs it.

Posting in an Inaccessible Location

If employees can’t easily see the posted summary, such as when it's in a locked office or behind glass, it does not serve any purpose. The best solution is to present it in a more prominent, accessible location like a break room or common bulletin board.

Incomplete or Inaccurate Information

Sometimes companies may share forms without updating the latest injury and illness data. These data types often misrepresent the company’s safety record and trigger audits or penalties.

Not Keeping Records for 5 Years

Even after the 300A is taken down in April, employers must retain all OSHA forms (300, 300A, and 301) for five years. Failure to maintain these records is a violation of OSHA recordkeeping requirements.

What are the Benefits of OSHA 300A Compliance?

Employers must retain the OSHA 300 Log, 300A Summary, and 301 Incident Reports for five years following the end of the calendar year that the records cover. During this time, they must update the 300 Log regularly to gain the following benefits:

Improved Safety Culture

Visible tracking of incidents reminds employees that safety is a priority. This way, they are easily encouraged to report physical or biological hazards and near-misses without fear. Staying compliant with OSHA regulations also protects companies from potential fines and legal issues.

Better Data-Driven Decisions

OSHA 300 and 300A data reviews showcase multiple trends in workplace injuries. So, organizations can easily address root causes and reduce future incidents. Knowing when does the OSHA 300A need to be posted also helps in the case of workers’ compensation claims and audits.

Improved Employer Reputation

Companies that comply consistently with OSHA standards are more likely to gain trust from employees, partners, and clients. It reflects their commitment to workplace safety and corporate responsibility in the country.

Remain Prepared During Inspections or Lawsuits

Proper OSHA records will always ensure you are prepared for surprise inspections or legal proceedings. Readily available documentation can prevent penalties and strengthen your position in case of any legal disputes.

Enroll in an OSHA Certification Now!

Understanding when does the OSHA 300A need to be posted is more than a legal obligation. It is a step toward cultivating a safer, more transparent workplace. So, employers can easily record and share injury and illness data to meet regulatory standards. This allows them to build more trust with their workforce and identify areas for improvement over time.

Workplace safety continues to transform with time. This means you must stay informed about updates in OSHA regulations and adapt recordkeeping practices. Enroll in an OSHA certification today and get started on your learning journey!

References

LearnTastic

Author

LearnTastic

Author

LearnTastic is a trusted leader in professional certification, offering expertly-designed online courses in OSHA training, physical therapy continuing education, caregiver certification, and more. Our flexible programs help professionals meet regulatory requirements, enhance skills and advance their careers. With a focus on practical, up-to-date learning, we empower professionals to thrive in their industries.

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Your Guide to OSHA 300A Posting and Recordkeeping Rules

Table of Contents

Why is the OSHA Recordkeeping System Important?

What Is the OSHA 300A Form?

When Does the OSHA 300A Need to Be Posted?

Promoting Transparency

Encouraging Accountability

Facilitating OSHA Inspections

OSHA 300A Vs. 300 and 301: What’s the Difference?

What are the OSHA 300 Posting Requirements?

6 Common Mistakes to Avoid During OSHA 300A Posting

Posting the Wrong Form

Posting Outside the Required Dates

Not Getting the Right Signature

Posting in an Inaccessible Location

Incomplete or Inaccurate Information

Not Keeping Records for 5 Years

What are the Benefits of OSHA 300A Compliance?

Improved Safety Culture

Better Data-Driven Decisions

Improved Employer Reputation

Remain Prepared During Inspections or Lawsuits

Enroll in an OSHA Certification Now!

References

LearnTastic

LearnTastic

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