§ 31. Agreement for contribution by employee void. No agreement by an
employee to pay any portion of the premium paid by his employer to the
state insurance fund or to contribute to a benefit fund or department
maintained by such employer or to the cost of mutual insurance or other
insurance, maintained for or carried for the purpose of providing
compensation as herein required, shall be valid, and any employer who
makes a deduction for such purpose from the wages or salary of any
employee entitled to the benefits of this chapter shall be guilty of a
misdemeanor.