New figures from the Central Statistics Office show that average weekly earnings eased by 0.6% to €687.28 in the fourth quarter of 2013 from €691.74 a year earlier.
The CSO said average hourly earnings in the last quarter of 2013 were €21.69 compared to €21.89 in the last quarter of 2012 - a fall of 0.9% over the year.
The figures show that average weekly earnings rose in nine of the 13 sectors surveyed, with the largest increase seen in the transportation and storage sector, with wages there up 6.7% to €766.85 from €718.81.
The administrative and support activities sector saw the biggest fall in wages, with earnings down 3.2% to €495.85 from €512.03.
Average weekly paid hours rose by 0.3% to 31.7 in the last three months of last year.
Today's CSO figures also revealed that the estimated number of people employed in the public sector fell by 1.4% in the fourth quarter of 2013 to 376,300 from 381.800.
The biggest percentage decrease was seen in the semi-state sector which showed a fall of 1,900 over the same time the previous year. The largest percentage increase was reported in the defence sector, with numbers rising there by 1% to 9,700 from 9,600.
Meanwhile, separate figures from the Central Statistics Office show that the total number of trips to Ireland increased by 8.2% to 1,350,800 in the three months from November to January. This gave an overall increase of 102,500 compared to the same time a year ago.
The CSO figures show that trips by residents of North America to Ireland rose by 14.8% to 182,800 and trips by UK residents grew by 8.5% to 633,900 during the three month period.
Trips by residents of other European countries increased by 1.6% to 432,200 while trips to Ireland from other countries rose by 28.5% to 102,000.
Today's figures also show that the total number of overseas trips made by Irish residents during the months from November to January increased by 1.4% to 1,197,300.