Rome, August 14 - Fewer than two private sector employees in 10 have a university degree in Italy, compared to a European average of three, according to a 2013 report by chambers of commerce association Unioncamere released Wednesday. Great Britain and Spain ranked highest in Europe with four in 10 workers who graduated from college, the report said. In addition, Italian university graduates were often overqualified for their jobs, a growing trend over the past few years, according to the study. Overall in 2012 less than one worker in five - 18.7% - aged 15 to 64 had a university degree in Italy, well under Great Britain's 39,9%, Spain's 39.5%, France's 35.2% and Germany's 28.9%. This is partly due to the fact that the average age of Italian workers is higher, Unioncamere said, with the older generation having a lower education level. However, when the 25-49 age bracket was considered, the situation improved only marginally, the study found, with university graduates making up 20% of the workforce compared to a European average of 34.7% with peaks in Great Britain where 45.5% of employees completed college, followed by Spain's 43.8%.