A public service company subject to regulation by the commission as to rates and service shall not: (1) Permit any employee to sell, offer for sale, or solicit the purchase of any security of any other person or corporation during such hours as such employee is engaged to perform any duty of such public service company; (2) by any means or device, require any employee to purchase or contract to purchase any of its securities or those of any other person or corporation; or (3) require any employee to permit the deduction from his or her wages or salary of any sum as a payment or to be applied as a payment of any purchase or contract to purchase any security of such public service company or of any other person or corporation.