But those costs have turned up of late, and whether the favorable trends of the past few years will be maintained is unclear. Hourly labor compensation as measured from the national income and product accounts increased sharply near the end of 2004. However, that measure appears to have been boosted significantly by temporary factors.
Other broad measures suggest that hourly labor compensation continues to rise at a moderate rate. The evolution of unit labor costs will also reflect the growth of output per hour. Over the past decade, the U.S. economy has benefited from a remarkable acceleration of productivity: Strong gains in efficiency have buoyed real incomes and restrained inflation.