(a) Upon request by a public office, employers, labor unions, and telephone companies shall provide location information concerning putative fathers and noncustodial parents for the purpose of establishing the parentage of a child or establishing, enforcing, or modifying a child support obligation. As used in this Section, the term “public office” is defined as set forth in the Income Withholding for Support Act, and “location information” means information about (i) the physical whereabouts of a putative father or noncustodial parent; (ii) the employer of the putative father or noncustodial parent; or (iii) the salary, wages, and other compensation paid and the health insurance coverage provided to the putative father or noncustodial parent by the employer of the putative father or noncustodial parent or by a labor union of which the putative father or noncustodial parent is a member. An employer, labor union, or telephone company shall respond to the request of the public office within 15 days after receiving the request. An employer, labor union, or telephone company that willfully fails to fully respond within the 15-day period shall be subject to a penalty of $100 for each day that the response is not provided to the public office after the 15-day period has expired. The penalty may be collected in a civil action, which may be brought against the employer, labor union, or telephone company in favor of the public office.
     (b) Upon being served with a subpoena (including an administrative subpoena as authorized by law), a utility company or cable television company must provide location information to a public office for the purpose of establishing the parentage of a child or establishing, enforcing, or modifying a child support obligation.
     (c) Notwithstanding the provisions of any other State or local law to the contrary, an employer, labor union, telephone company, utility company, or cable television company shall not be liable to any person for disclosure of location information under the requirements of this Section, except for willful and wanton misconduct.