Imagine you are paid $100 to build a website to sell some new widget to be delivered on November 1st just in time for the holiday season. The company also spends $1000 on a one-day internet marketing campaign that's around the launch.
Then there's a technical issue at launch and orders are being rejected left and right.
They could be out basically the whole value of the marketing campaign which is 10x your salary. You might owe them compensation for that, unless of course you got paid through an LLC and only have the $100 in your account.