29 CFR § 4902.2 - Definitions.
In addition to terminology in part 4001 of this chapter, as used in this part:
Record means any item, collection, or grouping of information about an individual that is maintained by an agency, including, but not limited to, his or her education, financial transactions, medical history, and criminal or employment history and that contains his or her name, or the identifying number, symbol, or other identifying particular assigned to the individual, such as a finger or voice print or a photograph.
System of records means a group of any records under the control of any agency from which information is retrieved by the name of the individual or by some identifying number, symbol, or other identifying particular assigned to the individual.
Working day means any weekday excepting Federal holidays.