La. Stat. tit. 9 § 3601
Whenever any person or corporation engaged in the newspaper business shall demand of its distributors or dealers a cash security to protect the furnisher of the newspapers from loss by reason of extending to such dealers or distributors credit on papers advanced for sale, the furnisher shall pay to that distributor or dealer, interest at the rate of four per cent per annum upon the amount of the deposit so long as it continues to hold or exact the deposit. The balance of the deposit together with earned interest shall be returned to the depositor, within ninety days after termination of the dealership or distributorship whenever the dealership or distributorship is discontinued, and any refusal or neglect to return the balance shall subject the furnisher of said newspapers to the penalty of paying the dealer or distributor 20 per cent per annum interest upon the deposit not returned to the depositor within said ninety days.
La. R.S. § 9:3601