Registration and deregistration of employees: steps and deadlines

The registration and deregistration of employees in CROSO must be accurate and timely in order for the employer to avoid fines and for the salary calculation to use the correct data. In the guide, you get an overview of mandatory documents, steps and deadlines for application before starting work, deregistration on the day of termination, as well as for changes during the employment relationship (annexations, transfers, working hours). We've included checklists, common mistakes, and tips for digital archiving and ZZPL compliance.

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Overview

Documents, responsibilities and most common errors in the CROSO procedure

Mandatory documentation before submission

Identification and contractual data

Personal data and JMBG of the employee, employment contract/hiring decision, start/end date, position/occupation code.

Supporting solutions and forms

Decisions on scheduling, internship/probation (if any), annexes and internal forms.

Powers and responsibilities

Powers of attorney/authorizations for submission to CROSO, appointed responsible persons and calendar of deadlines.

Application steps (before starting work)

  1. Check the contract, solutions and personal information
  2. Fill out and submit the application to CROSO before the first day of work
  3. Download and archive the certificate; update the personnel file
  4. Reconcile data with the time and payroll system

Check-out steps (on the day of termination)

  1. Prepare the legal basis for termination (agreement/termination/expiration, etc.)
  2. Submit de-registration to CROSO on the day of cessation of work
  3. Prepare the final calculation of earnings and unused vacation (if necessary)
  4. Archive receipt and close file (accesses/equipment)

Changes during employment

What changes are you making?

Contract annexes, transfers, changes in working hours, workplaces, addresses and other relevant data.

Good practice

Document each change with a decision/contract and report it in a timely manner so that records and payroll are harmonized.

Deadlines and responsibilities

Define the "HR calendar" with internal deadlines and responsible persons. Introduce a 4‑eye check before submission and a "cut‑off" deadline by which changes are entered for the current payroll.

Connection with payroll and PPP‑PD

CROSO status, working hours and contract changes must match the payroll input. After each check-in/check-out or change, check that the billing slips have been prepared and that the PPP‑PD has been submitted correctly.

Digital archive and data protection (ZZPL/GDPR)

A neat digital archive with role-based access and an audit trail facilitates internal and external controls. Keep check-ins/check-outs, solutions, confirmations and all related communications within the time limits prescribed by the rules and internal policies.

Checklist before sending

  • Are the contract and personal information correct and complete?
  • Has the deadline been met (registration before the start, check-out on the end day)?
  • Is the job/occupation code correct?
  • Are the certificates downloaded and archived?
  • Are payroll and records aligned?

The most common mistakes and prevention

  • Check-in/check-out delay → introduce calendar and reminders; define the pronouns
  • Incorrect or incomplete data → standard forms and 4‑eye checks
  • Misalignment of HR and payroll → single master data and monthly reconciliation
  • Unreported status changes → mandatory escalation and list of permitted changes

FAQ

Who submits application/deregistration in CROSO?

Employer or authorized person/accountant with proper power of attorney.

By when must the employee's application be submitted?

No later than before the start of the employee's work; it is recommended to submit it 1-2 days earlier.

What do I do if the wrong application has been submitted?

Submit the correction/amendment and document the reasons; reconcile personnel and payroll records.

Do I have to report every change of status?

Yes — annexes, transfers and changes of working hours/address are reported in a timely manner according to the rules.

Conclusion

When deadlines are met, documents are complete and records are reconciled, applications and de-registrations pass without stress and fines. Standardize steps and controls — and the FEDRA team can take over the entire CROSO process and align it with your payroll.

Publication date: February 2026
Category: HR administration
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