Is a Back Injury Aggravated by Lifting at Work Recordable?
A pre-existing back injury aggravated by a work event is recordable only when the work event significantly aggravates the prior condition. [1904.5(b)(3)](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.5) defines "significant aggravation" through four specific outcomes — death, loss of consciousness, days away or restricted work that wouldn't have otherwise occurred, or medical treatment beyond what was already needed. Without one of those outcomes, the case is not recordable, even if the employee reports new pain.
The Scenario
An employee with a documented prior back injury — a lumbar strain treated by their personal physician three years ago, with no current restrictions — is lifting boxes during a warehouse shift. They feel a sharp pain in the lower back, the same area as the previous injury. The supervisor sends them home for the rest of the shift. The next morning the employee sees their PLHCP, who diagnoses a lumbar strain aggravation, prescribes a five-day course of prescription muscle relaxants, and recommends two weeks of restricted duty (no lifting over 10 pounds).
The employee returns to work the following day on restricted duty, performing modified tasks for two weeks before resuming full duty.
The Reasoning
Four independent questions decide recordability for pre-existing condition aggravations:
- Was the injury work-related? Yes. The lifting event occurred in the work environment during work activity. None of the [1904.5(b)(2)](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.5) exceptions apply.
- Was there a pre-existing condition? Yes. The prior lumbar strain is documented, even though the employee had no current restrictions before the lifting event.
- Did the work event significantly aggravate the pre-existing condition? Yes. [1904.5(b)(3)](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.5) defines significant aggravation through four triggers; this case meets two: prescription medication (medical treatment beyond what was previously needed) and PLHCP-recommended restricted duty (which would not have otherwise occurred).
- Were any general recording criteria met? Yes. Restricted work (one or more days) and medical treatment (prescription medication) each independently trigger recordability under [1904.7(b)(1)](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.7).
The case is recordable. Document the date of the work event (the lifting incident), not the date of the original prior injury.
Edge Cases
Pre-existing condition cases turn on whether the work event significantly aggravated the prior condition. Several variations:
- Same body part, same pain, no new treatment or restrictions — not recordable. Pain alone is not significant aggravation. The work event must change the trajectory. - Employee fully recovered from prior injury before the work event — treat as a new case, not an aggravation. [1904.6](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.6) governs new-case determination. "Recovered completely" means all signs and symptoms had disappeared. - PLHCP recommends restriction but employer disagrees — still recordable. The PLHCP's recommendation is the trigger, not whether the employer applies it. - Employee continues working through the pain with no medical evaluation — not recordable on aggravation grounds, but document the report internally. If the employee later seeks treatment, re-evaluate at that point. - Aggravation from cumulative work activity (no specific event) — different framework. [1904.5(b)(3)](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.5) requires an "event or exposure" — chronic-stress or cumulative-trauma cases use different determination logic. - OTC pain medication only, no PLHCP involvement — not recordable. OTC medications at non-prescription strength are first aid under [1904.7(b)(5)(ii)(A)](https://www.osha.gov/laws-regs/regulations/standardnumber/1904/1904.7).
Reporting & Timeline
This case is recordable on your internal OSHA 300 Log. No external OSHA notification is required — that requirement applies only to fatalities (8-hour notification) and severe injuries: in-patient hospitalization, amputation, or loss of an eye (24-hour notification).
Document the case within seven calendar days of the work event per 1904.29(b)(3). The recording date is the date of the lifting event, not the date of the original prior injury.
Conclusion
A pre-existing back injury aggravated by a work event is recordable when the work event causes new medical treatment, days away, restricted work, loss of consciousness, or death that would not have otherwise occurred. This case meets the test on two grounds — prescription medication and restricted duty — making it recordable on either basis alone.
For aggravations where the employee reports pain but no new treatment is administered and no restrictions are imposed, the case is not recordable. The work event must change the trajectory of the prior condition through one of the four 1904.5(b)(3) triggers.
Citations Referenced
The OSHA regulations this determination relies on. Linked to the official text on osha.gov.
Determination of work-relatedness
An injury or illness is work-related if an event or exposure in the work environment either caused or contributed to the resulting condition or significantly aggravated a pre-existing injury or illness. Work-relatedness is presumed for injuries and illnesses resulting from events or exposures occurring in the work environment, unless an exception in 1904.5(b)(2) applies.
Exceptions to work-relatedness presumption
Lists nine specific exceptions where an injury or illness occurring in the work environment is NOT considered work-related: (i) employee present as member of general public; (ii) symptoms appearing at work but solely from non-work event; (iii) voluntary participation in wellness, medical, fitness, or recreational activity off-the-clock; (iv) eating, drinking, or preparing food for personal consumption; (v) personal tasks outside of working hours; (vi) personal grooming, self-medication for non-work condition, or intentionally self-inflicted; (vii) motor vehicle accident on company parking lot or access road during commute; (viii) common cold or flu; (ix) mental illness without PLHCP diagnosis as work-related.
Pre-existing condition aggravation rule
A pre-existing injury or illness has been significantly aggravated, for purposes of OSHA recordkeeping, when an event or exposure in the work environment results in any of the following: death (where pre-existing would not have caused death); loss of consciousness (where pre-existing would not have caused it); one or more days away from work, days of restricted work, or days of job transfer that would not have otherwise occurred; or medical treatment in a case where no medical treatment was needed for the pre-existing condition before, or a change in medical treatment was necessitated by the workplace event.
Determination of new cases
A case is a new case if the employee has not previously experienced a recorded injury or illness of the same type that affects the same part of the body, OR the employee previously experienced a recorded injury or illness of the same type that affected the same part of the body but had recovered completely (all signs and symptoms had disappeared) from the previous injury or illness and an event or exposure in the work environment caused the signs or symptoms to reappear.
General recording criteria
You must consider an injury or illness to meet the general recording criteria, and therefore to be recordable, if it results in any of the following: death, days away from work, restricted work or transfer to another job, medical treatment beyond first aid, loss of consciousness, or significant injury or illness diagnosed by a physician or other licensed health care professional.
Basic requirement — recording criteria
You must consider an injury or illness to meet the general recording criteria, and therefore to be recordable, if it results in any of the following: death, days away from work, restricted work or transfer to another job, medical treatment beyond first aid, loss of consciousness, or significant injury or illness diagnosed by a physician or other licensed health care professional.
Restricted work or job transfer
Restricted work occurs when, as a result of a work-related injury or illness: (1) you keep the employee from performing one or more of the routine functions of his or her job, or from working the full workday; or (2) a physician or other licensed health care professional recommends that the employee not perform one or more of the routine functions of the job, or not work the full workday.
First aid (parent section)
For the purposes of Part 1904, first aid means: (A) using non-prescription medications at non-prescription strength; (B) administering tetanus immunizations; (C) cleaning, flushing, or soaking surface wounds; (D) using wound coverings such as bandages, gauze pads, or butterfly bandages or Steri-Strips; (E) using hot or cold therapy; (F) using non-rigid means of support; (G) temporary immobilization while transporting an accident victim; (H) drilling a fingernail or toenail to relieve pressure, or draining fluid from a blister; (I) using eye patches; (J) removing foreign bodies from the eye using only irrigation or a cotton swab; (K) removing splinters or foreign material from areas other than the eye by simple means; (L) using finger guards; (M) using massages; or drinking fluids for relief of heat stress.
Letters of Interpretation
Official OSHA clarifications applied to this scenario.
Pre-existing conditions and the "recovered completely" standard
OSHA Letter of Interpretation · January 1, 2003
For purposes of 1904.6, an employee has "recovered completely" from a previous injury or illness when all signs and symptoms have disappeared. A subsequent injury of the same type affecting the same body part following complete recovery is treated as a new case.