Analyze, process, safeguard and manage information and / or documentation for the pre-payroll process of unionized and non-unionized personnel. Provide support to employees for payroll questions; active participation in projects in the area; involvement as a campus for the exchange of best practices as well as carrying out activities that contribute to the achievement of Human Resources objectives. Report the movements of additions, cancellations and salary modifications to the payroll area for submission to the IMSS. Maintenance of the assistance system for registrations, cancellations, shifts as well as updating of data contained in the system. Weekly report to Finance of regular hours and overtime. Request activation of payroll cards and capture them in the payroll system. Update weekly and fourteen weekly staff vacation balances. Maintenance to the payroll system for weekly and fourteenth staff leave. Program vacation premiums in the payroll system as well as control in Excel for their validation. Reconcile payroll clarifications weekly as well as deliver their results on a monthly basis. Complete the SQDCM metric in terms of payroll clarifications. Report to Payroll the movements related to INFONAVIT and FONACOT. Upload information on incidents in the payroll system (absenteeism, overtime, Sunday bonuses, clarifications).