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Multiple establishments in one ITA CSV

One row for each establishment in the 300A file, one row for each case in the 300/301 file, and one name that ties them together.

Worked example: three establishments

The 300A file. One header row, then one row for each establishment (10 of the 28 columns shown):

establishment_name	ein	city	state	zip	naics_code	size	total_dafw_cases	total_other_cases	total_injuries
Example Co Plant 1	123456789	Boston	MA	02116	332311	22	1	1	2
Example Co Plant 2	123456789	Nashua	NH	03060	332311	21	0	1	1
Example Co Warehouse	123456789	Hartford	CT	06103	493110	3	1	1	2

The 300/301 file. One row for each case, and column A says which establishment it belongs to (6 of the 24 columns shown):

establishment_name	year_of_filing	case_number	job_title	incident_outcome	type_of_incident
Example Co Plant 1	2025	1	Welder	2	1
Example Co Plant 1	2025	2	Packer	4	1
Example Co Warehouse	2025	1	Forklift driver	2	1
Example Co Warehouse	2025	2	Picker	4	1

The totals in the first file count the rows of the second. Plant 1 and the Warehouse each have one case with days away (incident_outcome 2) and one other recordable case (incident_outcome 4), and all four are injuries (type_of_incident 1). Deaths and transfer or restriction cases, which are not among the columns shown, are 0 in this example.

Case numbers 1 and 2 appear twice. That is allowed: a case number has to be unique within its establishment. Plant 2 has fewer than 100 employees (size 21), so it has no rows in the case file. Its one case is counted only in its 300A row.

Check your establishment names

One establishment name on each linePaste column A of your case file, or the names from your 300A file and your ITA account together.

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The rules, and where each comes from

Rule	Source
"A firm with more than one establishment must submit establishment-specific injury and illness data for each establishment that meets the size and industry reporting criteria. These data may be submitted using one ITA account."	ITA FAQ
One 300A file can hold one or more establishments, one row each.	300A data dictionary
Each establishment must have a unique name.	300A data dictionary
In the case file the establishment name must match the name in the ITA exactly, or the file does not load. The error this causes	300/301 CSV specification
The 300A data must be processed before the ITA will process the case data. The order of steps	ITA FAQ
OSHA recommends files of 1000 records or fewer, to cut processing time.	300A data dictionary
Whether an establishment must submit depends on its own industry classification, not the firm's.	ITA FAQ
An enterprise or corporate office may submit for the establishments it owns or controls.	29 CFR 1904.41(b)(8)
"Yes, you may use numbers or codes as the establishment name. However, the submission must include a legal company name, either as part of the establishment name or separately as the company name."	29 CFR 1904.41(b)(10)

Several establishments in one workbook? The converter puts every establishment in one 300A file and every case in one 300/301 file.

Open the converter

Short answers

Can I submit several establishments in one OSHA ITA CSV file?

Yes. The 300A file takes one row for each establishment, and the 300/301 file can hold cases for one or more establishments, each row naming its establishment in the first column.

Do I need a separate ITA account for each establishment?

No. OSHA's FAQ says the data for a firm's establishments may be submitted using one ITA account.

Can two establishments use the same case numbers?

Yes. The CSV specification requires a case number to be unique within its establishment, not across the file.

Sources

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.