Georgia was the first state in the nation to offer employers a telework tax credit. Under this law, employers were eligible for a one-time tax credit of up to $20,000 to offset implementation costs, plus they were eligible for annual credits of up to $1,200 per new teleworker. Many states are offering employer services and benefits such as this, check with your local Department of Transportation.
According to the Sacramento division of Cal-trans, “Cash incentives for establishing employee home-based telecommuting are available to [Sacramento] businesses and local government agencies… Participating employers will receive up to $1,000 per new telecommuter win a maximum of $5,000 per employer or agency.”
According the the Best Places to Work for Commuters list, by implementing the IRS's Commuter Benefits program, employers can actually save money per employee, over attempting to compensate for commute expenses with salary increases. Check out the example below.