The CSO figures examining May to August show that the average weekly wages has risen to €819.13 compared to the same period last year.
The data also shows marked changes in the sectors workers are employed in, with increases in the Industrial, Information and Communications, and Accommodation and Food sectors.
The average hourly wage has also increased to €25.57 during the same four-month period. The average hourly rate from May to August in 2019 was €23.69, representing a 7.9 per cent increase.
The Temporary Wage Subsidy Scheme, which 663,100 people have availed of since it commenced in April, has caused a reduction in labour costs, which have fallen by 36 per cent.
Statistician with the CSO, Louise Egan says changes in the areas in which people are employed due to Covid-19 has impacted the data.
"When considering the change in earnings, it should be noted that there may be a compositional effect due to the significant changes in employment in certain sectors.
"The composition of the labour market in Q2 2020 is very different to the composition of the labour market in previous quarters, including Q2 2019, against which the annual changes are measured, with significantly fewer employments in certain sectors in Q2 2020.
"The increase in average weekly earnings may be impacted to some degree by those employments that have left a sector having lower average earnings than those employments that remained in the sector in both quarters."