The 2007 data was drawn from a survey using a simple random sample taken from all employment tribunal cases which had closed between January 2007 and January 2008. There were 2,020 telephone interviews with claimants, a response rate of 66%.
The 2012 data was drawn from a survey which took a random sample of all single employment tribunal claims which had closed between January 2012 and December 2012.
The sample was stratified according to:
- case outcome (successful at tribunal, unsuccessful at tribunal, Acas settled, other settled, withdrawn, dismissed)
- case track (fast, standard and open)
There were 1,988 telephone interviews with claimants, a response rate of 53%.
Suppression rules and disclosure control
Percentages lower than 2% have been suppressed as they are not large enough to be reliable.
Percentages are rounded to the nearest whole number.