Data project

Spanish Survey on on Working Conditions , 2011

Encuesta Nacional de Condiciones de Trabajo, 2011 (ENCT)

Summary

This survey is carried out to complete several objectives as follows: - To identify and characterize the exposure to various occupational hazards; - To know those work environment factors that influence the health of workers; and, - To estimate preventive activities carried out in the companies. The main strength is focused on the sample size (close to 9,000 interviewees), which covers the complete Spanish territory, being representative when the economic activity and the size of the company are considered. The questionnaire is fully consolidated after the previous issues and the data quality is ensured. Amongst drawbacks, the duration of the questionnaire to be completed by means of the PAPI methods (without any computer assistance) must also be highlighted.

Type of data

Data Source
Survey

Type of Study
Crosssection regular

Data gathering method
Face-to-face

Access to data

Conditions of access
The latest data available (2001) can be accessed in a predefined table format, in Spanish, at http://www.ine.es/jaxi/menu.do?type=pcaxis&path=/t25/p453/a2011/&file=pcaxis, as well as the cross-sectional and longitudinal anonymised microdata (http://www.ine.es/en/prodyser/micro_ecv_en.htm; http://www.ine.es/en/prodyser/micro_ecv_lon_en.htm). Other information on general methodology is also available both in Spanish and English (http://www.ine.es/daco/daco42/condivi/ecv_metodo.pdf), while the personal and household questionnaire are delivered only in Spanish (http://www.ine.es/metodologia/t25/t2530453cues.htm).

Type of available data (e.g. anonymised microdata, aggregated tables, etc.)
Aggregated tables and microdata. Also, a report on every survey can be downloaded in Spanish.

Formats available
Simple access to data can make frequencies and cross-tables and charts quick and easy by selecting any variable of the questionnaire. Results are downloaded in Excel and Word format. Microdata can be accessed through the left bar (Data files) by signing an authorization document (information about the user and the objectives to develop) in SPSS, STATA and SAS formats (http://encuestasnacionales.oect.es).

Coverage

Coverage Years of collection, reference years, and sample sizes
Data were collected for the year 2011 between October 19, 2011 and February 21, 2012 and consists of 8,892 interviews. Sampling errors according to economic sectors and workplace size are calculated. Weighting coefficients are also deployed to adjust data to the general population where the sample is drawn. Six waves of this survey have been carried out (1987, 1997, 1999, 2003, 2007 and 2011) with 2007 being the turning point.

First year of collection
1987

Stratification if applicable
Census tracts, dwellings and occupied persons, plus the activity and the size of the company.

Base used for sampling

Geographical coverage and breakdowns
Spain, with the exception of the cities of Ceuta and Melilla.

Age range
People aged 17 and over occupied in economic activities and living in family dwellings

Statistical representativeness
Population representative

Coverage of main and cross-cutting topics
The survey contents can be classified in several essential domains: - present working situation and contract types - work-place data (economic activity, number of workers) - occupation - environmental conditions at work - chemical and biological pollutants - safety conditions - exposure frequency to physical and emotional factors - preventive organisation - work schedule - training - violence at work - health status and health damages - personal data

Linkage

Standardisation
NACE rev. 2 was used

Possibility of linkage among databases
Data are anonymous so no linking is available.

Data quality

Entry errors if applicable
The accuracy of information, the correct application of the methodological standards in the questionnaires and the fulfilment of all technical procedures were consistently supervised on 100% of the interviewers, as well as all the questions related to the economic activities of the company where the interviewee is reporting to work.

Breaks
The 2007 ENCT has changed the sampling procedure to get information about workers at their home, not at companies. So, it is not possible to make a rigorous comparison with all issues.

Consistency of terminology or coding used during collection
The sample focuses on the proximity and similarity of risks in relation to the economic activities classification (NACE 2009), aggregated in 12 activities, and the workplace size. It follows a multi-stage stratified procedure (census tracts, dwellings and an occupied person).

Governance

Contact information

Instituto Nacional de Seguridad e Higiene en el Trabajo (INSHT), Ministry of Employment and Social Security
Torrelaguna, 73
28027 Madrid Spain Phone: 91 363 41 00
Email:
Url: http://www.oect.es/portal/site/Observatorio/menuitem.1a9b11e0bf717527e0f945100bd061ca/?vgnextoid=61e5e39fd7218110VgnVCM100000b80ca8c0RCRD&vgnextchannel=dbb5b8f81a8c9110VgnVCM1000000705350aRCRD

Timeliness, transparency
Data are delivered six months after collection