Sec. 3. (a) A lessor may not accept an assignment of earnings from the lessee for payment or as security for payment for a charge arising under a rental purchase agreement.
(b) An assignment of earnings in violation of this section is unenforceable by the assignee of the earnings and revocable by the lessee.
(c) This section does not prohibit a lessee from authorizing deductions from the lessee's earnings if the authorization is revocable and is otherwise permitted by law.