According to our survey of published news and government reports on strike-related activity conducted during the winter and spring of 2017, the number of workers threatening to strike between 2012 and 2016 was 199 percent higher than the number who actually did strike according to BLS. Because strike threat information would not provide insight into CES estimates, including it in the strike report would not serve the purpose of the report. Since CES estimates round to thousands of workers, strikes of fewer than 1,000 have little meaningful effect on employment data. The CES data collection forms indicate that responding to the CES survey is mandatory only in three states and Puerto Rico. ...mandating the reporting of strike-related data would require considerable statutory changes at the state and federal levels. 6.The Federal Mediation and Conciliation Service should report details of the outcome of settlements resulting from its intervention in strike threats and strikes.