How to Upload OSHA ITA CSV Files for Multiple Establishments
Multi-establishment CSV work is mostly a consistency problem: names, addresses, EIN, NAICS, year, and required fields must stay aligned.
Who this is for
Multi-location employers and consultants filing for several establishments.
Check each establishment first
OSHA applies electronic reporting requirements at the establishment level. Do not assume every location has the same coverage result.
- Confirm peak employee count per establishment.
- Confirm each establishment's NAICS code.
- Use OSHA's Coverage Application for the official result.
Keep establishment identity exact
The establishment name and address in the file should match the ITA portal record. Small differences can turn into upload or matching errors.
Validate before upload
Run the file through ITAReady before uploading so header, required-field, math, and formatting errors are visible in one pass.
Related errors
Related guides
Have a file ready to check?
Upload your OSHA CSV or XLSX and see blockers, warnings, and safe formatting fixes before OSHA upload.