Organization responsible for the statistics

The statistics are collected by the labour inspectors, and compiled and published by the Sección de Estudios y Estadística of the Ministerio de Trabajo y Seguridad Social.

Objectives and users

Not available.


Strikes and lockouts

The statistics cover: Work stoppages initiated by employers and rotating or revolving strikes are not included, nor are working to rule, go-slows or overtime bans.

Minimum threshold None.

Economic activities

The public sector is not covered by the statistics; public sector employees are forbidden to take strike action.


Workers directly involved and workers indirectly involved. In addition to regular paid employees, the statistics cover temporary and seasonal workers. Part-time workers, casual and unpaid family workers are not included, nor are workers laid off or workers absent on sick or annual leave or absent for any other reason.

No particular occupational groups are excluded.

>h4>Geographic areas Not available.

Types of data collected

Concepts and definitions


A collective work stoppage with a view to enforcing demands of an occupational or economic nature, having previously fulfilled legal procedures (collective bargaining process).

Work stoppage (paro)

A collective work stoppage without warning, when the legal procedures are not fulfilled, as in the case of workers in the public service or of workers not submitting claims of an occupational or an economic nature (illegal strikes).

Civic work stoppage (paro civico)

An interruption of economic activity as a means of exerting pressure in order to find a solution to local problems.

These are working definitions used for statistical purposes.

Methods of measurement

Strikes and lockouts

The basic unit of measurement used to record a strike is the economic unit (establishment or enterprise). A strike that is interrupted but later resumes, still due to the same case of dispute, is counted as a new strike when it resumes.

Economic units involved

The economic unit is the establishment, firm, enterprise or workplace.

Workers involved

The number of workers involved in a strike refers to the total number of union members. The number of workers involved in a work stoppage (paro) is the total number of workers participating in that stoppage.


The duration is measured in workdays from the date the strike began in the first economic unit involved to the date it terminated in the last one.

Time not worked

Total time not worked is measured in workdays, either by ascertaining the total amount time not worked on each day of the strike and summing these totals, or as the product of the number of workers involved and the duration. Overtime is not taken into account.


Branch of economic activity

The data are classified by branch of economic activity using an international classification (00 to 09).

Reference period and periodicity

The statistics are compiled and published for periods of a month, six months and a year. They refer to strikes beginning during the particular reference period plus those continuing from the previous period.

Analytical measures


Historical background of the series

Not available.


Series available

Not available.

Bibliographic references

Ministerio de Trabajo y Seguridad Social: Boletín de Estadísticas del Sector Trabajo (bi-monthly).

Data published by the ILO

The number of strikes and lockouts, the number of workers involved, by economic activity.


Not available.

International standards

Not available.

Methods of data collection

There is no legal obligation to report the occurrence of a strike. Information is obtained from reports by labour inspectors.