Which FLSA records must be kept for three years?

The following FLSA employer records must be preserved for at least three years:

• Payroll and other records containing information required by the recordkeeping regulations and that are basic rather than substantiating.
• Union contracts relied on for the exclusion of the cost of board, lodging or other facilities furnished by the employer.
• Union contracts guaranteeing employment.
• Plans, trusts, employment contracts and union contracts involving exclusions from the regular rate.
• Contracts and memoranda pertaining to Belo-type contracts guaranteeing fixed weekly pay for fluctuating hours.
• Agreements basing overtime pay on piece, hourly or basic rates.
• Certificates and notices mentioned in the recordkeeping regulations, including certificates authorizing the employment of learners, apprentices, workers with disabilities, and students, homeworkers, child laborers, and the notices required in connection with the seasonal-industry overtime-pay exemptions.
• Sales and purchase records, that is, a record of (a) total dollar volume of sales or business, and (b) total dollar volume of goods purchased or received during such periods (weekly, monthly, quarterly, etc.), in such form as the employer maintains in the ordinary course of business.