Employees consistently place wellness programs at the top of their wish lists, and more and more businesses are responding with enticing incentives. At the same time, however, a sizable number of employees are leaving those incentives on the table.

These are among the key findings from the latest wellness survey conducted by Fidelity Investments in Boston and the National Business Group on Health. The two organizations have teamed up since 2009 to analyze the growth and design of corporate health improvement programs. The big finding? Employers are increasing the wellness-based incentives they offer workers to a record $693 per employee, up from $594 in 2014 and $430 five years ago.

"It's extremely encouraging to see an ever-increasing number of companies embrace corporate wellness programs as a way to promote a healthy workforce," said Brian Marcotte, president and CEO of the NBGH. "As employers continue to look at ways to improve employee health and increase productivity, we expect to see employers continue to expand and evolve their wellness offerings, and find new and innovative ways to encourage employee participation levels and measure the success of their programs."