ST. LOUIS -Enterprise Rent-A-Car announced the launch of Giving Back, a philanthropic contest in which charities nominated by Enterprise employees compete through social media for funds from the company's foundation.

Visitors to Giving Back on the Enterprise Facebook page can learn about the individual charities and vote for foundation funds to be given to the charity of their choice. The 10 competing charities were nominated by Enterprise employees in the US, Canada and the UK.

Nearly 75 percent of the foundation's contributions are steered by Enterprise employees to qualifying organizations they are actively involved with. Voting will determine which of the 10 employee-backed causes that recently received grants from the foundation will earn additional support.

"We give back to the communities that are responsible for our business success," according to Jo Ann Kindle, president of Enterprise Rent-A-Car Foundation. "It's a natural part of our commitment to be a responsible corporate citizen. Our Giving Backcampaign is another way for our employees to be involved in our philanthropic efforts, giving them one more reason to feel good about being part of our business."

Voting in the Giving Back competition is already under way and concludes on April 15, 2011. Results will be posted on Facebook, Twitter and Enterprise's sustainability website, DrivingFutures.com, following the close of balloting.

The 10 employee-backed causes compete for the following foundation donations, based on the voting results: first place - $10,000; second place - $5,000; third and fourth place - $2,500.