intermittent leave

Definition from Nolo’s Plain-English Law Dictionary

Leave taken under the Family and Medical Leave Act (FMLA) in separate blocks of time rather than all at once. For example, an employee with chronic asthma may occasionally need a day or afternoon off when the condition flares up, or an employee receiving chemotherapy may need to take a few hours off every other week for treatment.

Definition provided by Nolo’s Plain-English Law Dictionary.