Spherion Corp.'s (NYSE: SFN) employee confidence index rose 4.0 points month-over-month in April to 45.4 as more workers believed the economy is getting stronger.

"This month's employee confidence index has reached its highest level in 2009, which is similar to other U.S. confidence measures issued in April," said Spherion President and CEO Roy Krause. "I believe this rise can be attributed to recent economic indicators pointing to slower rates of contraction and indicating that a possible bottoming out is within reach."

The index's survey found that 16% of workers believed the economy is getting stronger, up 10 percentage points from the previous month. Forty-six percent of workers believed the economy is getting weaker, down 22 percentage points from March.

In addition, 70% of workers in April said it is unlikely they will lose their jobs in the next year, up two percentage points from March.