This rise, more than twice the rate of inflation, is part of a deal agreed by PCS after Fujitsu doubled the amount of money in the pot with an extra £500,000.
It will mean some workers who were paid just £13,500 two years ago will now not be paid less than £15,500, an increase of almost 15%.
The union's 720 members working on contracts across the UK for DVLA, HM Revenue and Customs, Home Office, Ministry of Defence and Office of National Statistics, were planning a co-ordinated strike with colleagues from the Unite union on Monday 19 September.
The Unite action, over separate issues, will go ahead and PCS members have pledged their support by: writing to Fujitsu calling on them to resolve the dispute; sending a message of support to Unite; sending a PCS delegation to Unite picket lines on the day; and doing workplace collections for Unite's hardship fund.
Prior to the strike vote, Fujitsu was refusing to increase a pay offer that would have meant rises of between just 1.5% and 2.5%.