On April 22, 2024, HHS released the updated Instruction 990-1 Workplace Flexibilities Policy. NIH OHR's Workplace Flexibilities websites and resources are in the process of being updated due to recent policy changes. We appreciate your patience as we update our resources and release communications related to policy implementation.

Core Hours: The time during the workday, workweek, or pay period within the tour of duty during which an employee covered by a Flexible (not Compressed) Work Schedule must be present for work or on leave.

Credit Hours: Those hours within a flexible work schedule that an employee elects to work in excess of his or her basic work requirement so as to vary the length of a workweek or workday. An employee’s supervisor must indicate the employee is eligible to use credit hours in advance. Employees on a Compressed Work Schedule are not eligible to earn Credit Hours.

Maxiflex: A type of flexible work schedule that contains core hours on fewer than 10 workdays in the biweekly pay period and in which a full-time employee has a basic work requirement of 80 hours for the biweekly pay period, but in which an employee may vary the number of hours worked on a given workday or the number of hours each week within the limits established for the organization.

Employees must be present for work or on approved leave during the designated core hours (excluding meal breaks). Under Maxiflex, employees are allowed, with supervisory approval, to earn credit hours.

Overtime: Under FWS programs, refers to all hours in excess of the employee’s scheduled hours of work in the day or 80 hours in a biweekly pay period (but does not include credit hours).

Split Schedule: A flexibility available under a Maxiflex Work Schedule to start and stop one’s workday up to three times within a day. If an employee splits their schedule, it is assumed a meal period is taken during that time. For instance, an employee may work 8 a.m. to noon, then 3 p.m. to 6 p.m., and finally 8 p.m. to 9 p.m. Tour of Duty: Under Maxiflex, this defines the limits set by an IC within which an employee must complete his or her basic work requirement.