A new survey suggests employers are looking to employees to help cut rising health care costs, some offering incentives to encourage healthier behavior, or implementing penalties if goals are not met.

According to the survey by global human resource consulting company Aon Hewitt, employers’ top health care goals for this year are improving employee health habits, lowering health care costs, decreasing worker health risk, increasing employee awareness of health issues and improving participation in health improvement and disease management programs.

However, 56 percent of employers say that motivating employees to change unhealthy behaviors will be their biggest challenge to these health care goals. About a quarter are concerned about employees’ reluctance to change and the unpredictability of costs. Twenty-two percent said regulations and compliance issues were a challenge, and about the same named the aging workforce as a concern.