Is it legal for a gas station to charge its employees for gas run-offs?

I am an employee at a busy off-the-highway gas station. We have no cameras observing the parking lot, and pre-pay is not an enforced policy to pumping gas. Whenever we have a customer pump gas and leave before paying, we are either charged for the sale or have to take a write-up. In certain cases, [...] http://bit.ly/n46L7r