Indiana Code Title 4. State Offices and Administration § 4-1-8-2

Sec. 2. (a) On any form, application, or other writing prepared by or issued under the authority of any state agency, the following information must be included if the individual is requested to provide the individual's Social Security number:

(b) In any location where a form, application, or other writing covered in subsection (a) is taken or filled out, there shall be posted in a conspicuous place a sign in bold print containing information identical to that required on the forms required in subsection (a).