Sending a supporting document to Agirc-Arrco seems simple, but the chosen channel determines whether the document will be processed or ignored. Since 2026, documents sent by email are simply no longer accepted: only submissions via the online personal space and postal mail allow for the completion of a supplementary retirement file. This guide compares the two methods, details the accepted formats, and explains how to verify that your documents have been received.
Personal space or postal mail: comparison of the two channels recognized by Agirc-Arrco
The key information to remember: no email address is provided to receive supporting documents. Documents sent by email are not processed. Two channels remain valid, with very different characteristics.
| Criterion | Online personal space | Postal mail |
|---|---|---|
| Delivery time | Immediate (instant deposit) | Variable according to La Poste (a few working days) |
| Accepted formats | PDF, JPG, PNG (full page, readable) | Originals or photocopies as requested |
| Proof of deposit | Date-stamped screenshot (no systematic acknowledgment) | Recommended with acknowledgment of receipt |
| Risk of rejection | Blurry file, Word, ZIP, partial capture | Incomplete document or incorrect address |
| Cost | Free | Cost of a simple or registered letter |
For those who wish to delve deeper into the complete process, a detailed guide explains how to send documents to Agirc-Arrco step by step, with precautions to take for each channel.
Digital file formats: common reasons for rejection on the Agirc-Arrco space
Online submissions concentrate the majority of errors reported by insured individuals. Only readable PDF, JPG, and PNG files are accepted, provided that the document is scanned in full page. A career statement photographed at an angle or a proof of residence in Word format will be automatically rejected.
Compressed archives (ZIP, RAR) are also not accepted. A file that is too large or a partial screenshot blocks the processing of the file, sometimes without explicit notification to the sender.
Preparing a compliant file before submission
- Scan the document flat, in full, without any cut-off areas or fingers visible in the frame. The PDF format remains the most reliable for maintaining readability
- Check that the file opens correctly on another device before submitting it, as a corrupted PDF during scanning does not generate any alert on the Agirc-Arrco side
- Rename the file explicitly (for example “employer-certificate-2025.pdf”) to facilitate identification by the manager handling the file
A document rejected for a formatting issue does not always trigger an immediate error message. The delay is often discovered several weeks later when the payment of the supplementary pension is suspended.
Verifying the receipt of Agirc-Arrco documents: the weak point of the system
This is the topic that generates the most frustration among insured individuals. Online submission does not systematically generate an acknowledgment of receipt by email or notification in the personal space. In practice, after uploading a supporting document, nothing formally confirms that the file has been recorded.
Date-stamped screenshot: the only reliable proof online
Several recent feedback experiences converge on a precautionary practice: take a screenshot immediately after submission, ensuring that the system’s date and time are visible. This screenshot constitutes the only usable proof in case of dispute or follow-up.
For postal mail, registered mail with acknowledgment of receipt remains the safest method. Online tracking by La Poste allows for checking the delivery date, and the signed acknowledgment serves as conclusive proof.
What to do if the file remains stuck after sending
A file that does not progress after several weeks may mean that the document was never associated with the correct account. Logging into the Agirc-Arrco personal space allows you to check the status of the file and see if a document is marked as missing.
In the absence of visible updates, contacting the supplementary retirement fund by phone with the file number and the sending date remains the most direct recourse. Always keep a copy of each document sent to expedite these follow-up procedures.
Submission errors and payment suspension: the direct link between method and delay
Choosing the wrong channel or submitting a non-compliant file does not simply cause an administrative delay. In some documented cases, an error in the submission method has led to the suspension of the supplementary retirement payment. The document sent by email is never processed, and the organization considers that the document is missing from the file.
The typical scenario unfolds as follows: the insured receives a letter requesting a supporting document, responds by email with the attachment, receives no confirmation, and then discovers one or two months later that their payment is suspended due to an incomplete file.
- Never respond to a request for supporting documents by email, even if the reminder letter contains a contact email address: this is for questions, not for documents
- Prefer online submission for speed, but follow up with a registered letter if the amount at stake or urgency justifies it
- Check in the personal space that the status of the file changes from “waiting for documents” to “complete file” in the weeks following submission
The distinction between contact channel and document submission channel is not obvious, especially for insured individuals who are not familiar with online procedures. Submitting via the personal space, despite the absence of automatic acknowledgment, remains the fastest channel as long as formatting constraints are respected and a date-stamped proof of each upload is kept.
