Shares of some top staffing companies are down at 10 a.m.:

Kelly Services Inc. class A fell $.26 or 1.5 percent, to $17.16.

Korn/Ferry International Inc. fell $.44 or 1.5 percent, to $28.63.

ManpowerGroup fell $.44 or .5 percent, to $83.50.

Robert Half International Inc. fell $.39 or .8 percent, to $47.40.