Work-Relatedness Under OSHA 1904.5: A Practical Decision Path
A case is work-related if something in the work environment caused or contributed to it, or significantly aggravated a pre-existing condition.
Quick answer
A case is work-related if something in the work environment caused or contributed to it, or significantly aggravated a pre-existing condition. Work-relatedness is presumed for events at work unless one of nine specific exceptions applies.
Most recordkeeping disputes start one step too late.
The rule in plain English
An injury or illness is work-related if an event or exposure in the work environment caused or contributed to it, or significantly aggravated a pre-existing condition (29 CFR 1904.5). It is presumed for anything that happens in the work environment unless one of nine exceptions applies: the person was there as a member of the public; symptoms surfaced at work but came solely from a non-work event; voluntary wellness, fitness, or recreation; eating or drinking for personal consumption; personal tasks outside assigned working hours; personal grooming, self-medication for a non-work condition, or a self-inflicted injury; a motor vehicle accident in a company parking lot or access road while commuting; the common cold or flu; and mental illness, unless the employee voluntarily provides a qualified professional's opinion that it is work-related.
The nine exceptions in 1904.5(b)(2)
- The employee was present as a member of the general public rather than as an employee
- Signs or symptoms surface at work but result solely from a non-work event or exposure
- Voluntary participation in a wellness program or a medical, fitness, or recreational activity
- Eating, drinking, or preparing food or drink for personal consumption
- Personal tasks at the establishment outside assigned working hours
- Personal grooming, self-medication for a non-work condition, or an intentionally self-inflicted injury
- A motor vehicle accident in a company parking lot or on a company access road while commuting
- The common cold or flu
- Mental illness, unless the employee voluntarily provides a qualified professional's opinion that it is work-related
What this looks like in practice
First decide whether work caused, contributed to, or significantly aggravated the condition. Deciding work-relatedness after severity is the most common ordering mistake, and it pushes borderline cases onto the log, or off it, for the wrong reason. The fix is to settle where the employee was, what they were doing, and at whose direction before anyone discusses treatment or severity.
As the safety manager you usually own the decision itself, so the most useful habit is writing down the fact each call rests on at the time you make it.
The mistake to avoid
Teams often ask whether the case is severe before asking whether it is work-related.
Work-relatedness is the first gate: a case that fails it never reaches the recording criteria, the 300A totals, or the rates. A case that passes still needs a recording criterion before it goes on the log.
Edge cases worth checking
- OSHA lists exceptions for some events that happen in the work environment.
- Most exceptions apply only when the case results solely from the excepted activity. If a workplace hazard contributed, the case is work-related.
Example
Three cases in the break room: an employee chokes on their own lunch (eating exception, not work-related); another burns a hand on a coffee machine while making coffee for a client meeting (a work task, so work-related); a visitor slips on the wet floor (a member of the public, not your employee's case).
Step by step
- Establish where and when it happened.
- Check whether that place is part of the work environment.
- Check the nine exceptions.
- Only then apply the recording criteria.
What to keep in the case file:
- What the employee was doing, where, and at whose direction
- Whether the location is part of the work environment
- Which exception you considered and the facts that support or rule it out
- For aggravation cases, the condition before the event and what changed after it
Where 300log helps
300log keeps the facts that decide work-relatedness (where the event happened, what the employee was doing just before, and what happened) in each case's 301 fields, right next to the log entry they support.
For a quick answer without an account, use the free recordability checker.
Frequently asked questions
Is the common cold or flu ever recordable?
No. The common cold and flu are excepted. Other contagious diseases, such as tuberculosis, are work-related if the employee was infected at work.
How is work-relatedness decided on business travel?
A travel injury is work-related if the employee was engaged in work activities in the employer's interest. Once they check into a hotel, activities there are judged like home activities, and personal detours break the connection.
Do we need a doctor to decide work-relatedness?
No. The employer decides, using the facts. A provider's opinion matters for one exception: mental illness is work-related only if the employee voluntarily provides a qualified professional's opinion saying so.
Are parking lot injuries work-related?
Usually yes, because an employer-controlled lot is part of the work environment. The exception is narrow: motor vehicle accidents in the company lot or access road while the employee is commuting.
Sources
Primary regulation and agency guidance this article relies on.
- [1]29 CFR 1904.5: Determination of work-relatednessOccupational Safety and Health Administration · osha.gov(opens in a new tab)
- [2]29 CFR 1904.7: General recording criteriaOccupational Safety and Health Administration · osha.gov(opens in a new tab)
- [3]OSHA detailed guidance for the injury and illness recordkeeping ruleOccupational Safety and Health Administration · osha.gov(opens in a new tab)
Written and reviewed by the 300log Editorial Team. Guidance, not legal advice: confirm edge cases with OSHA or counsel.