Decree 407/2026: Key Aspects of the Labor Reform Regulation and Its Impact on Companies, Unions, and Workers

Through Decree 407/2026, published on May 29, 2026, the Executive Branch advanced the regulation of various aspects of Labor Modernization Law No. 27.802. The measure introduces significant changes in labor relations, collective bargaining, union activity, digital platforms, labor registration, and temporary staffing services, consolidating an agenda focused on digitalization, administrative simplification, and the revision of traditional structures in collective labor law.

A Regulatory Decree with Strong Operational Impact

Although formally a regulatory decree, Decree 407/2026 contains provisions that go beyond merely procedural aspects and are likely to generate significant legal debate regarding the limits of the Executive Branch’s regulatory authority. Its central focus is to operationalize the reforms introduced by Law 27.802, establishing application criteria for employers, workers, unions, and government agencies.

  1. Digitalization of Labor Relations

One of the decree’s clearest guidelines is the deepening of digitalization processes. The most notable measures include:

  • Strengthening of electronic labor registration systems
  • Use of digital means for notifications and communications
  • Implementation of electronic mechanisms for labor documentation
  • Incorporation of technological tools for monitoring medical leave

The stated purpose is to reduce administrative burdens, improve the traceability of labor relationships, and facilitate government oversight.

Electronic Medical Certificates

The regulation of Article 210 of the Employment Contract Law is of particular significance.

The decree establishes that medical prescriptions indicating rest must be issued electronically through platforms registered in the National Registry of Digital Health Platforms (ReNaPDiS) and must be signed by professionals licensed in the Federal Network of Health Professional Registries (REFEPS).

Furthermore, in cases of discrepancy between the worker’s diagnosis and the medical examination arranged by the employer, recourse to official medical boards or specialized institutions of recognized standing is permitted.

This provision aims to reduce conflicts related to workplace absenteeism and to provide greater legal certainty in the management of sick leave.

  1. Reform of Collective Bargaining

One of the most far-reaching chapters of the decree concerns the collective bargaining system governed by Law 14.250.

New Employer Representativeness Requirements

Employer associations participating in collective bargaining must now demonstrate representation of no less than 10% of the workers within the relevant bargaining scope. The measure seeks to reinforce the legitimacy of bargaining parties and prevent the participation of entities with merely nominal representation.

Revision of Conventional Contributions and Dues

The decree introduces restrictive criteria regarding so-called “obligational clauses.” Going forward:

  • All contributions, dues, funds, and withholdings established by collective agreement will be computed on an aggregate basis
  • The limit set by Article 9 of Law 14.250 may not be exceeded
  • Agreements exceeding those caps may not be ratified
  • Employer contributions will only be mandatory for affiliated companies where applicable under current legislation

This is a provision with significant financial impact for union organizations, employer chambers, and collectively funded institutions.

Call for Renegotiation of Collective Agreements

The decree also regulates Article 137 of Law 27.802 and establishes criteria for determining when a collective agreement should be considered expired.

Even for agreements that do not contain an express expiration date, the administrative authority may use December 31, 2026 as a reference point to promote renegotiation processes.

The measure aims to drive the updating of longstanding collective agreements and encourage a comprehensive review of their content.

  1. Significant Changes in Union Matters

Another central focus of Decree 407/2026 is the amendment of the regulatory framework of Union Associations Law No. 23.551.

Greater Oversight of Union Representativeness

The labor authority will be able to verify information provided by unions through cross-referencing with records from the Argentine Integrated Pension System (SIPA) and other public databases.

A new criterion is also established for resolving union accreditation disputes: an association seeking to displace another must demonstrate at least 5% more dues-paying members.

Limitations on Union Leave Credits

The decree provides that the use of union hours:

  • Must be compatible with the company’s operational continuity
  • Requires prior notice of at least 48 hours
  • May not be accumulated or transferred between representatives

These provisions are likely to generate controversy regarding their compatibility with freedom of association standards recognized by the International Labour Organization (ILO).

Amendments to Union Protection

The regulation also redefines aspects related to:

  • The nomination of union candidates
  • The enforceability of such nominations against the employer
  • The circumstances under which judicial suspension or removal of union protection may be sought

Notably, injunctive relief is expressly authorized when there is a risk to persons, property, or the operation of the company.

  1. Digital Platforms: New Enforcement Authority

With respect to mobility and delivery services provided through technology platforms, the decree designates the Secretariat of Transport as the enforcement authority for the specific regime created by Law 27.802.

The Secretariat of Labor will retain jurisdiction over any collective agreements that may emerge within the sector.

This decision confirms the approach adopted by the labor reform, which expressly excludes these independent service providers from the general framework of the Employment Contract Law.

  1. Temporary Staffing Companies: Flexibility and Regulatory Update

The decree repeals Decree 1694/2006 and approves new regulations for Temporary Staffing Companies.

According to the decree’s stated rationale, the previous regime was outdated and imposed excessive restrictions on this form of employment.

The declared objectives are to:

  • Expand employment opportunities
  • Clarify the circumstances in which this modality may be used
  • Align required guarantees with proportionality criteria
  • Provide greater legal certainty for operators and workers
  1. Changes in the Construction Industry

Another significant aspect is the centralization of labor registration for construction workers within the Revenue and Customs Control Agency (ARCA).

Until now, these functions were primarily carried out through IERIC. Under the new framework:

  • Registrations, terminations, and labor modifications will be filed with ARCA
  • IERIC must adapt its systems accordingly
  • A transitional period for information exchange between both agencies is provided

This measure is part of the government’s strategy of registration centralization and administrative simplification.

  1. Practical Impact and Potential Controversies

Decree 407/2026 is one of the most significant regulations to emerge from the Labor Modernization Law.

From a business perspective, the decree introduces tools aimed at:

  • Simplifying administrative processes
  • Digitalizing labor management
  • Limiting certain costs arising from collective bargaining
  • Strengthening oversight and registration mechanisms

However, several of its provisions may be subject to judicial and constitutional challenge, particularly those relating to:

  • Caps on conventional contributions
  • Union representativeness requirements
  • Regulation of union leave credits
  • Union protection
  • The scope of regulatory authority vis-à-vis rights recognized by laws and international conventions

Conclusion

Decree 407/2026 deepens the reform agenda inaugurated by Law 27.802 and represents a further step in the administrative modernization of the Argentine labor system. Nevertheless, its practical implementation is likely to open a new phase of litigation and judicial interpretation, particularly in the field of collective labor law, where several of its provisions may be subjected to constitutional and conventionality review by labor courts.

For companies, unions, and legal advisors, it is essential to monitor the complementary regulations issued by the enforcement agencies and to track the evolution of the first judicial precedents examining the validity and scope of these new provisions.