Productivity revised up to 2.6% in first quarter (by Greg Robb)

WASHINGTON (MarketWatch) - The productivity of U.S. nonfarm businesses was revised just a bit higher in the first quarter than previously estimated, the Labor Department reported Wednesday. Productivity - defined as output per hour worked- rise at a 2.6% annual rate in the quarter, revised up from 2.3% in the earlier estimate a month ago. Unit labor costs rose 2.2%, revised down from 2.3%. The estimates were largely in line with expectations by economists.