Electronic Signature for Offer Letter: 2026 Guide
Electronic signature transforms the offer letter into a legally reliable act starting in 2026. Discover how to secure this key document in your recruitment process.
Job offer letter, search mandate, placement contract, candidate confidentiality agreement, secondment contract: coordinate three-way signature between recruitment firm ↔ client company ↔ candidate without mail or in-person meetings. Compliant with the Labor Code, CNIL recruitment resolutions, the eIDAS regulation and Article 1366 of the Civil Code.
From search mandate to final placement, each step involves at least two parties to coordinate: the firm almost never signs alone.
Mandate signed with the client company before the mission starts: scope, fees, exclusivity, replacement guarantee. Signature in less than 24 hours to start the search without waiting for a mail response.
Reciprocal promise signed by the client company, countersigned by the firm (in its capacity as mandatary), then accepted by the candidate. The dual-channel OTP formally identifies each party and traces the date of acceptance — enforceable under Article L1221-1 of the Labor Code.
Before sharing the confidential client brief with shortlisted candidates, an NDA protects the advertiser's identity and job terms. Mobile signature in less than 2 minutes from the candidate's side.
Placement agreement signed between the recruitment firm and client company: payment terms, replacement guarantee conditions (typically 3-6 months), termination provisions. 10-year archival with probative value for Urssaf audits and fee disputes.
Personnel provision: tripartite agreement between recruitment firm ↔ user company ↔ employee, coordinated signatures in a single envelope with common timestamp. Compliant with Code du travail sections L1251-42 and following.
For Recruitment Process Outsourcing or fixed-fee sourcing missions: engagement letter specifying deliverables, KPIs and reporting. Advanced electronic signature for formal commitment from the client.
Six garanties pensées pour la spécificité du recrutement : signature tripartite, mobilité candidat, GDPR strict et délais ultra-courts.
A single envelope coordinates the client, the firm and the candidate, configurable signature order (sequential or parallel), automatic notification of the promotion, and a single path for all three parties.
Applicants often on international mobility or in employment sign from their phones in less than 2 minutes, without downloading an app or creating an account.
Each signed promise produces a time stamped certificate: identity of the candidate (OTP email + SMS), date of acceptance, SHA-256 imprint of the document.
Données candidats chiffrées (TLS 1.3 + AES-256), hébergement 100 % UE, suppression sur demande, traçabilité des accès. Conforme à la délibération CNIL n°2002-017 et au GDPR pour le traitement des données personnelles en recrutement.
The contracts and mandates are kept for 10 years as evidence, the recommended period for Urssaf checks and fee litigation.
Webhooks, Zapier and Make to connect Certyneo to your ATS (LinkedIn Talent Hub, Greenhouse, Lever, Teamtailor, Beetween, Flatchr). Automatically create an envelope when validating an offer on the ATS side, update the candidate status for signing.
Since the Court of Cassation ruling of September 21, 2017 (Cass. soc., no. 16-20.103), the unilateral job offer no longer constitutes an employment contract until the candidate accepts it — but acceptance immediately binds the employer. The acceptance date therefore becomes the triggering event for all rights: probation period, seniority, withdrawal.
Certyneo issues for each signed offer a audit certificate embedded in the PDF, which brings together all technical evidence:
This body of evidence protects the recruitment firm and client company against typical disputes ("I never accepted", "the offer was modified", "the acceptance date is later") and secures defense before the Labor Court.
Recruitment processes particularly sensitive data (CV, family situation, mobility, salary expectations) that require a strict compliance framework.
Article L5321-1 covers paid placement activities, Article L1251-42 et seq. covers temporary work and the making available of staff.
The CNIL requires transparent information from the candidate, a purpose limited to professional evaluation, a proportionate retention period.
Base légale = exécution de mesures précontractuelles à la demande du candidat (article 6.1.b du GDPR). Droits du candidat (accès, rectification, effacement, portabilité) implémentés nativement. DPA standard disponible au signup pour formaliser le rôle de sous-traitant.
The advanced electronic signature formally traces the date of hiring of the candidate placed starting point of the guarantee period (generally 3-6 months).
Yes. The promise of employment can be signed on any medium (article 1366 of the Civil Code : electronic writing has the same evidentiary force as paper writing). Since the judgment Cass. soc. of 21 September 2017 (no. 16-20.103), it is the acceptance of the candidate that forms the contract Certyneo traces this acceptance with a qualified time stamp that can be challenged to the Conseil de prud'hommes.
A single Certyneo envelope coordinates the three parties.You set up the order of signing (e.g. client first, then firm to countersigner, then candidate), each party receives its link at the right stage, and a single audit trail traces the three signatures with their respective time stamps.
There is no legal deadline for the signature on the client's business side, but once the promise is sent to the candidate, the latter must accept it within a reasonable time (in practice 7 to 10 days depending on the case law).
Oui. Hébergement 100 % UE (IONOS Allemagne), chiffrement TLS 1.3 en transit et AES-256 au repos, isolation stricte des données par cabinet. La base légale du traitement est l'exécution de mesures précontractuelles à la demande du candidat (article 6.1.b GDPR). Une DPA standard est disponible et conforme à la délibération CNIL n°2002-017 sur le recrutement.
Yes, contracts for employment (Articles L1251-42 et seq. of the Labour Code) require a tripartite signature: firm/agency user company employee.
Native connectors via Zapier and Make for LinkedIn Talent Hub, Greenhouse, Lever, Teamtailor, Beetween, Flatchr. Our REST API allows automatic envelope creation to validate an offer in your ATS, and updating the candidate status to sign the pledge. Full documentation at certyneo.com/developers.
Our plans include a 10-year probative archiving, recommended length of time for Urssaf inspections, fee litigation and prud'homal actions.
No. The candidate receives a direct link via email, opens the appointment on their phone, verifies their number via an SMS code (OTP), signs with their name and finger without downloading an app, without creating an account, without CB. UX-wise, the experience is designed to create no friction within 7-10 days of acceptance.
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