Companies are growing more upbeat about the U.S. economy this year and plan to take on more workers as demand improves, according to a survey, Bloomberg reported.

Some 78 percent of businesses, the most in a year, project the economy will expand more than 2 percent in 2012, according to the National Association for Business Economics’ April survey. The share is up from 65 percent in the group’s January report, Bloomberg said.

About four in 10 firms, the most since July 2011, said they expect employment to pick up in the next six months, showing businesses are looking beyond higher oil prices and Europe’s debt crisis.

At the same time, 66 percent said they expect no change in prices in the next three months, indicating that Federal Reserve Board policy makers will have room to keep interest rates low to nurture the almost three-year-old expansion.

The survey shows “an improvement in economic conditions,” said Nayantara Hensel, chairwoman of the NABE outlook survey committee and professor of Industry and Business at the National Defense University in Washington. “Panelists are not significantly concerned about the potential impact of higher oil prices or the European crisis on their business.”

The April survey showed that 60 percent of the businesses, the most in a year, said their sales were rising. In January, 41 percent said demand was climbing. Some 83 percent of manufacturers surveyed said sales were increasing, indicating the industry is still powering the economy.

Thirty-nine percent of all companies surveyed from March 20 to April 10 projected job gains in the next six months. Eleven percent said employment will drop because of attrition, which suggests the labor market outlook may be more optimistic since such declines often occur when an employee is confident about finding another job, the report said.