Spain’s National Working Conditions Survey: ENCT

The National Working Conditions Survey, known as ENCT, forms part of INSST’s history of studies on work and health. Its findings help describe exposures and conditions among Spain’s working population. The editions do not always use the same design.

In brief

ENCT supports the study of working conditions in Spain. Its development includes methodological changes and integration with European surveys. Before using a figure, identify the edition, population, question and period. National findings do not replace an employer’s risk assessment.

Contents
  1. What information it provides
  2. Why its history matters
  3. Choose the edition and question
  4. Changes in method and context
  5. Usefulness for an organisation
  6. Hypothetical example: preparing a consultation on schedules
  7. Related concepts
  8. References

A–Z dictionary →

What information it provides

These studies describe working and health conditions across different groups. They help place a problem in a broader context and formulate questions about exposures, organisation and differences between activities.

An aggregate finding does not automatically describe every workplace. To use it in prevention, relate the population studied to the organisation’s tasks and people, avoiding turning a national average into an individual diagnosis.

Why its history matters

INSST dates the first edition to 1987. Up to the fifth edition, workers and managers were studied together; research on working conditions and preventive management was subsequently separated.

To improve European comparability, the Spanish working conditions survey was integrated into Eurofound’s sixth EWCS. Research on preventive management was linked to ESENER. ENCT, EWCS and ESENER should therefore not be treated as interchangeable names or as series that have always been independent.

Choose the edition and question

The INSST Observatory catalogue provides historical reports and later publications containing Spanish data. Distinguish the fieldwork year from the year the report was published.

Before citing a percentage, retain the question wording, answer options and calculation base. “People in employment” and “people exposed to an agent” may be different denominators; omitting that distinction changes the meaning of the result.

Changes in method and context

The Spanish report on the 2021 European survey is based on telephone interviews conducted during the pandemic. It should not be mechanically compared with face-to-face interview editions without reviewing methodological warnings.

Coverage, wording or population composition may also change. An observed difference may include effects of those changes. Explaining a limitation is preferable to presenting a variation as proven preventive improvement or deterioration when the design does not support that conclusion.

Usefulness for an organisation

The data can guide a literature review, contextualise a proposal or identify topics to explore with the workforce. Application then requires observing work and using appropriate assessment methods.

To share a finding, retain a note identifying the source, edition, table, population and limitations. Readers of the presentation can then understand what the data actually establish and avoid reusing them outside the context in which they were obtained.

Hypothetical example: preparing a consultation on schedules

A team finds national results on working time and decides to explore shift organisation at its workplace. It first checks that the survey category corresponds to the issue it wants to analyse.

It then consults workers and reviews its specific arrangements. The survey is a reference for formulating questions, not evidence that the workplace has exactly the same exposure or needs identical measures.

References

  1. INSST. National surveys of working conditions and preventive management. Official source
  2. INSST. European Working Conditions Survey 2021: data for Spain. Official source

Editorial information

Publication date: 19 October 2026.

Editorial responsibility: Sabentis Editorial Team.

Author: Pablo RodríguezLinkedIn

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

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