Mont. Code Ann. § 15-30-2505

All amounts deducted and withheld must be considered as a tax collected under the provisions of 15-30-2501 through 15-30-2509, and an employee does not have any right of action against the employer in respect to any money deducted and withheld from the employee's wages and paid to the state in compliance or intended compliance with 15-30-2501 through 15-30-2509.