How to Fix Invalid Header Rows in OSHA ITA CSV Files

The first row of the CSV does not use OSHA's expected field names.

What this means

OSHA's CSV upload expects specific column names. Human-friendly labels, changed casing, missing underscores, or duplicate columns can make the file fail.

Why this happens

The spreadsheet uses labels such as EIN Number instead of ein.
Headers were edited for readability before export.
A template from a prior year was reused without checking current fields.
Columns were duplicated or deleted during spreadsheet cleanup.

How to fix it manually

Download the current OSHA CSV template for the form type.
Copy the exact header row into your file.
Do not rename headers for readability.
Remove duplicate or extra columns before uploading.

How ITAReady helps

ITA Ready maps common header variants for diagnosis, warns when OSHA-exact names are missing, and shows what each header should be.

Validate My CSV

Fix the file before you upload again

ITA Ready checks common OSHA ITA formatting and validation issues, explains them in plain English, and helps you get to a corrected export faster.

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