IRISH employees in medium and large firms earned 57% more than workers from the EU accession states, according to the latest figures from the CSO.
It also said Irish workers in small firms earned 36% more than employees from EU accession states.
The latest CSO report on small businesses in Ireland found Irish workers earned an average €15.44 per hour in enterprises with 50 or fewer employees, compared with €11.34 per hour for workers from the EU accession states in 2006.
However, workers from the UK and other EU-15 stories earned more than Irish employees, taking in €16.16 and €16.25 per hour respectively.
Average hourly earnings were highest for Irish employees in medium and large enterprises with 50 or more employees at €19.96.
Employees from the UK earned on average €19.41 per hour, which were the highest paid non-Irish employees.
The lowest paid were those from the EU accession states, who earned, on average, €11.43 per hour, which was 57% of the average hourly rate earned by Irish employees.
The figures also show that there has been an increase of 129% of non-Irish nationals at work in the state, from the second quarter of 2003 to the second quarter of 2007 to 316,300.
Also in the construction sector medium and large enterprises had a total turnover of €11.7 billion in 2005.
Turnover generated by medium and large construction enterprises has grown year-on-year, increasing by over 130% from 2000 to 2005, and 23% from 2006.
Also, 99% of firms employing 20-49 people in the construction industry in Ireland were Irish-owned, however, in the industry sector almost 42% of larger firms were foreign-owned.
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