Spain · National · Royal Decree-law

Royal Decree-law 4/2023 · Prevention of heat and adverse-weather risks

Preventive provision in force and incorporated into Royal Decree 486/1997

Current official Spanish title: Real Decreto-ley 4/2023, de 11 de mayo, por el que se adoptan medidas urgentes en materia agraria y de aguas en respuesta a la sequía y al agravamiento de las condiciones del sector primario derivado del conflicto bélico en Ucrania y de las condiciones climatológicas, así como de promoción del uso del transporte público colectivo terrestre por parte de los jóvenes y prevención de riesgos laborales en episodios de elevadas temperaturas.

On this page
  1. What it regulates
  2. Who it applies to
  3. Key provisions
  4. History and versions
  5. Transitional provisions and application notes
  6. Official BOE legal relationships
  7. Official sources
  8. Explore the concepts in Sabentis Explore

What it regulates

Final provision one strengthens protection for outdoor work and workplaces that cannot be enclosed. Adverse weather, task characteristics and individual circumstances must be assessed and effective measures taken, including adjusted hours or prohibition of specific tasks where necessary. This record excludes the instrument’s agricultural, tax, water and transport measures.

Who it applies to

Only final provision one, its effective date and parliamentary validation. The new additional provision in Royal Decree 486/1997 applies to all workplaces, including those excluded under its Article 1.2, subject to the conditions it establishes.

Key provisions

Deletes paragraph 5 of Annex III to Royal Decree 486/1997 and inserts an additional provision addressing environmental conditions in outdoor work.

Final provision first

Assessment must consider adverse weather, the task and personal characteristics or known biological condition. Measures are not determined solely by ambient temperature.

Final provision first

Specific tasks must be prohibited during the affected hours where protection cannot otherwise be ensured. The provision also refers to Article 23 of Royal Decree 1561/1995.

Final provision first

With an orange or red warning from AEMET or the competent regional service, working conditions must be adapted if earlier measures do not ensure protection, including reduced or changed working hours.

Final provision first

Entry into force was on 13 May 2023, the day after publication. The preventive provision should now be read alongside the consolidated text of Royal Decree 486/1997.

Final provision sixth

History and versions

Initial publication: 12/05/2023 · Initial entry into force: 13/05/2023

BOE-A-2023-11187

The prevention amendment was published on 12 May 2023 and entered into force on 13 May 2023. Parliamentary ratification was published on 9 June 2023; its correction of 6 July 2023 identified the ratifying body as Congress’s Permanent Deputation. It did not amend the prevention provision. Subsequent agricultural changes do not themselves change this OSH wording.

Text versions of the selected OSH provisions

Selection limited to Final Provision One on heat and adverse weather and to its entry into force. Agricultural, tax, water and transport measures in the same Decree-Law are outside the prevention history.

PublicationEffective dateOfficial referenceAffected provisions
12/05/202313/05/2023BOE-A-2023-11187Final Provision One, Final Provision Six

Sources for this selection:

BOE-A-2023-13661 · BOE-A-2023-15643

Transitional provisions and application notes

  • An orange or red warning is not an automatic universal ban on work. The duty to adapt is linked to preventive measures being insufficient to ensure protection.

    Final provision first
  • Action need not wait for an orange or red warning: paragraphs 1 and 2 already require protection against assessed risk and may require prohibiting tasks at specific times.

    Final provision first
  • Extension to the workplaces in Article 1.2 concerns this additional provision. It does not automatically apply every other requirement of Royal Decree 486/1997 to each excluded sector.

    Final provision first
  • The subsequent amendment to Article 6 by Decree-law 5/2023 concerns agricultural measures; it is not a new version of OSH final provision one. A database update date must not be mistaken for a preventive-law amendment.

    Final provision sixth

Official BOE legal relationships

The displayed history is limited to the selected OSH provisions. The BOE analysis also retains the relationships affecting other subjects in the legislation.

Consult the full BOE analysis

Official sources

Official sources checked on 14/11/2026. Updating a database record does not by itself mean that the legislation has been amended.

  1. BOE-A-2023-11187
  2. BOE-A-2023-11187
  3. ELI identifier
  4. BOE-A-2023-15135
  5. BOE-A-2023-14045
  6. BOE-A-2023-13661
  7. BOE-A-2023-15643

Official BOE sources consulted on 14 November 2026. Consolidation is informative and has no legal force; the official publication must be consulted for legal purposes. The history of the checked record is retained without claiming complete coverage of case law or implied amendments.

Sabentis editorial translation into English; it is not an official translation and does not replace the official text.

Editorial information

Publication date: 14 November 2026.

Editorial responsibility: Sabentis editorial team.

Editorial review by Pablo RodríguezLinkedIn

Executive Vice President of the International ORP Foundation and Chief Financial Officer of Sabentis.

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