Louisiana Revised Statutes Tit. 6, § 824.1. Late charges prohibited on certain payments

No association organized under this Chapter shall assess a late charge or impose any penalty upon a borrower as to any payment received by it when the due date of the payment falls on a day during which the association is not open to the public during its normal business hours and when the payment is received on the next succeeding day during which the association is open to the public during its normal business hours.