Since the Court of Cassation ruling of September 21, 2017 (Cass. soc., No. 16-20.103), the unilateral offer letter no longer constitutes an employment contract until the candidate accepts it — but acceptance immediately binds the employer. The acceptance date thus becomes the triggering event for all rights: probation period, seniority, withdrawal.
Certyneo delivers for each signed offer an audit certificate integrated into the PDF, which compiles all technical evidence:
- Candidate identity (verified email, phone confirmed by OTP)
- Exact date and time of acceptance — qualified timestamping enforceable
- SHA-256 fingerprint of the offer as accepted, proving the absence of subsequent modification
- Consultation log (how many times the candidate opened the offer before accepting)
- Identification of the offer author from the client company (countersigned signature)
This body of evidence protects the firm and the client company against common disputes ("I never accepted", "the offer was modified", "the acceptance date is later") and secures defense before the Labor Court.