Retention schedules are lists or series of records that provide information about county records; the record title, description, the retention period. Ready to create a new retention schedule or revise an existing schedule?Fill out this form to get started. A retention schedule is a plan for how long to keep a record, and what to do with the record after that. Business Records To Keep Forever. Retain the original data and all project records for at least 3 years after submission of the final report or award termination. College employees must preserve emails following established records retention schedules. Provide standards for the management and retention of county records comparable to the provisions of the Act;. Retain the original data and all project records for at least 3 years after submission of the final report or award termination. Under the ADEA, documents should be kept at least two years if the employer knows the applicant or employee is at least 40 years old.