[Alternance] Chargé de Missions RH (H/F)

Manage end-to-end HR operational processes including employee exits, contract modifications, and terminations. Track specific work hours for on-call and remote staff by drafting documentation, collecting timesheets, verifying data with managers, and coordinating with the Payroll service. Draft amendments, correspondence, and internal notes while assisting the BU HR director in disciplinary matters and legal disputes. Contribute to HR policy deployment on the ground by consolidating data and preparing logistics for personnel representative meetings. Respond daily to manager and employee inquiries regarding leave, absences, and administrative procedures. Process official aid requests for youth hiring and foreign collaborator work authorizations. Generate and analyze indicators for interviews, work hours, and leave balances. Act as the primary interface with central services covering Payroll, Recruitment, Accounting, and SIRH.