The Bureau of Labor Statistics has two types of data about work stoppages: Work Stoppages program data and the Strike Report.
The Work Stoppages program provides monthly and annual data and analysis of major work stoppages involving 1,000 or more workers lasting one full shift or longer. The monthly and annual data show the establishment and union(s) involved in the work stoppage along with the location, the number of workers and the days of idleness. The monthly data list all work stoppages involving 1,000 or more workers that occurred during the full calendar month for each month of the year. The annualized data provide statistics, analysis and details of each work stoppage of 1,000 or more workers that occurred during the year. The work stoppages data are gathered from public news sources, such as newspapers and the Internet. The BLS does not distinguish between strikes and lock-outs in the data; both are included in the term "work stoppages".
The Strike Report, which is at http://www.bls.gov/ces/cesstrk.htm, is a summary of strike activity during the Current Employment Statistics (CES) survey reference period, which includes the 12th of the month. See the Work Stoppages Frequently Asked Questions for more information on the differences between Work Stoppages and the Strike Report.
February 11, 2015
In 2014, there were 11 major work stoppages involving 1,000 or more workers, lower than the 15 work stoppages in 2013, and equaling the second lowest annual total since the series began in 1947. In 2014, major work stoppages involved 34,000 workers for 200,000 days idle. More...
Work Stoppages Data
Work Stoppages information is available by calling (202) 691-6275 or you can submit a work stoppages data question by email.