Work-Relatedness

When does an injury or illness qualify as work-related under OSHA's recordkeeping standard?

29 CFR 1904.5

The Basic Rule

Under 29 CFR 1904.5(a), an injury or illness is considered work-related if an event or exposure in the work environment caused or contributed to the resulting condition, or if the work environment significantly aggravated a pre-existing condition.

The work environment is defined as the establishment and other locations where employees are in the course of their employment. This includes locations away from the main workplace when the employee is performing work tasks (e.g., a client site, a vehicle during a work errand).

Presumption of work-relatedness: OSHA uses a presumptive rule — if an injury or illness occurs in the work environment, it is presumed to be work-related unless it clearly falls into one of the recognized exceptions.

29 CFR 1904.5(b)(2) — Exceptions to Work-Relatedness

An injury or illness that occurs in the work environment is not considered work-related if it falls into one of these specific exceptions:

Symptoms from a pre-existing condition

The injury or illness involves signs or symptoms that surface at work but result solely from a non-work-related event or exposure that occurs outside the work environment.

Voluntary participation in wellness programs or recreation

The injury results solely from an employee voluntarily participating in a wellness program, fitness activity, or recreational activity (e.g., a company-sponsored sports league or gym).

Personal tasks outside assigned working hours

The employee was on company premises as a member of the general public rather than as an employee (e.g., personal errand before clocking in).

Personal grooming or self-medication

The injury or illness is solely the result of personal grooming, self-medication for a non-work-related condition, or is intentionally self-inflicted.

Motor vehicle accidents in a parking lot

The injury occurs on a company parking lot or company access road while the employee is commuting to or from work (not during a work task).

Common colds and flu

The illness is the common cold or flu. Note: other contagious diseases can be work-related if there is workplace exposure.

Mental illness

Mental illness is generally not considered work-related unless the employee voluntarily provides a medical opinion from a licensed healthcare professional stating that it is work-related.

Pre-Existing Conditions and Aggravation

This is one of the most nuanced areas of OSHA recordkeeping. A pre-existing condition that is significantly aggravated by the work environment becomes work-related and must be recorded if it meets recording criteria.

“Significant aggravation” means that the work event or exposure caused the employee to: experience death, days away from work, restricted work or job transfer, or medical treatment beyond first aid — when the pre-existing injury or illness on its own would not have resulted in those outcomes.

Example: An employee with a pre-existing back condition lifts a box at work and experiences a significant worsening requiring prescription medication. The work event significantly aggravated the pre-existing condition — this is recordable.

Travel and Remote Workers

Employees who travel for work are in the work environment throughout the trip, including at hotels. However, injuries that occur during personal activities (recreational activities, personal detours) are generally not work-related even during a business trip.

For remote workers working from home, only injuries that occur while performing work tasks in the home office are considered work-related. An injury in another part of the home unrelated to work duties is not recordable.

Disclaimer: This guide is based on 29 CFR 1904.5 and OSHA's published interpretations. It is provided for educational purposes only and does not constitute legal or compliance advice. Always consult the full regulatory text and, for complex cases, a qualified professional.