Employers are becoming increasingly concerned about employees' ability to save for retirement, prompting many of them to rethink their retirement benefits plan strategies and assist their employees in better preparing for retirement.

Aon Hewitt, the global human resources consulting and outsourcing business of Aon Corp., recently surveyed more than 500 large U.S. employers, representing over 12 million employees, to determine their current and future retirement benefits strategy. According to the findings, just 4 percent of employers are very confident their workers will retire with adequate retirement assets, down substantially from 30 percent in 2011.

Additionally, only 10 percent of plan sponsors feel very confident that their employees are taking accountability for their own retirement success, and fewer than one in five employers are confident that workers will be able to manage their income during retirement.