While he acknowledges improvements in the in the U.S. economy, Davidson writes that they " are wholly related to extreme monetary policy that I feel cannot be sustained and this leads to a level of artificial growth that is being viewed as organic while in reality, it is not." The country's "slow growth" combined with increased government regulation and complex tax policy also pose growth challenges.

Davidson believes companies now are more willing to invest in new software after a period of maintaining previous setups. "We do see a fair amount of interest in implementing new improvements into IT using software. As a data point, 2009 was the first year in nearly the last 30 years where depreciation aggregated more than new capital investment."

The tech sector "seems to be doing well, " so strong hiring at IT companies doesn't surprise Robert Half's Good. Businesses maximize existing IT systems in economic downtown turns and now, with a brighter financial outlook, are looking to upgrade. The manufacturing industry serves as another solid sector as depleted inventories lead to an influx of orders.

Good cautions that not every industry has recovered, saying that "clearly, if you are in home construction it is still a challenging sector."

He points to the U.S. Commerce Department's February , which noted that building permits for the month were down 20.5 percent compared to the year-ago period and privately owned new home construction projects declined 20.8 percent compared to February 2010.