The department is authorized by the Internal Revenue Code to solicit Social Security numbers. The department uses Social Security numbers as the identifying number for the member file to ensure that any amounts paid from retirement accounts are properly reported to the Internal Revenue Service (IRS) as required by law. Each member of the retirement system is required to supply his or her Social Security number to the department. Failure to do so will not cause the member to lose benefits, but may result in misreporting to the IRS which can lead to adverse tax consequences for the member.