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The sum of G-J must equal the sum of M1-M6
Every recordable case is counted twice on Form 300A: once by outcome (G to J) and once by type (M1 to M6). The two sums must be the same number.
Have the log open? Drop it in and get both ITA files with the errors repaired.
Open the converter| Field | Counts | CSV column |
|---|---|---|
| G | Deaths | total_deaths |
| H | Cases with days away from work | total_dafw_cases |
| I | Cases with job transfer or restriction | total_djtr_cases |
| J | Other recordable cases | total_other_cases |
| M1 | Injuries | total_injuries |
| M2 | Skin disorders | total_skin_disorders |
| M3 | Respiratory conditions | total_respiratory_conditions |
| M4 | Poisonings | total_poisonings |
| M5 | Hearing loss | total_hearing_loss |
| M6 | All other illnesses | total_other_illnesses |
Worked example
Five cases in the year: two with days away, one on restricted duty, two other recordable. Three were injuries, one a skin disorder, one hearing loss.
G 0 + H 2 + I 1 + J 2 = 5. M1 3 + M2 1 + M3 0 + M4 0 + M5 1 + M6 0 = 5. The file passes this check.
How the sums drift apart
- A log row has two outcome circles marked. Form 300 says to select only one, the most serious.
- A log row has no type marked in column (M), or two.
- Day counts from K or L were typed into H or I. K and L are days. H and I are cases.
- A case was added to the log after the 300A totals were written.
The converter counts both sums from the same case rows, so they agree by construction, and it shows which rows have no outcome or no type until you settle them.
Short answers
What are fields G through J on Form 300A?
Totals of cases by most serious outcome: deaths (G), days away from work (H), job transfer or restriction (I) and other recordable cases (J).
What are M1 to M6?
Totals of cases by type: injuries, skin disorders, respiratory conditions, poisonings, hearing loss and all other illnesses.
Sources
- OSHA ITA Frequently Asked Questions
- ITA CSV Documentation: Establishment and Form 300A data dictionary
- OSHA Forms 300, 300A and 301 package
Read on 2026-11-10. OSHA can change these documents; the link is the authority. Logmend is an independent information tool. It is not affiliated with or endorsed by OSHA or the U.S. Department of Labor, and it is not tax, legal or professional advice.