Almost 13 times as many days were lost to industrial disputes during the second quarter of 2012 compared to same period last year, according to the CSO.
Over 7,700 days were lost to three industrial disputes during the period, compared to 572 days between April and June in 2011.
Three disputes involved 1,145 workers and three firms.
Two of these disputes were in the industry sector, which included 1,310 workers and 6,114 days lost. Bord na Móna was one of the companies that had an industrial dispute during this period.
The other was in the wholesale and retail trade, repair of motor vehicles and motorcycles that included 135 workers and 1,640 lost days.
The figures from 2004 to the second quarter of 2012 show that 2009 had the highest number of industrial disputes with 278,228 workers involved and 329,593 days lost.
The lowest year for industrial disputes was 2008 with 356 workers and 4,147 days lost.
The number of days lost is calculate by multiplying the number of persons involved by the number of normal working days during which they were involved in the dispute.
The information on Industrial disputes is based on details supplied by the Industrial Relations section, Department of Jobs, Enterprise and Innovation and on information collected directly from other sources by the CSO.