If you manage leave for a large employer, intermittent leave is likely your most time-consuming challenge. Unlike continuous leave with a clear start and end date, intermittent leave can arrive as a last-minute callout with no warning, minimal documentation, and an unprepared manager caught in the middle.
A recent AbsenceSoft survey found that 42% of HR managers cite managing intermittent leave as a top challenge. And for the third year in a row, the majority of HR leaders reported an increase in overall leave requests. Among those who saw an increase, more than half reported volumes rising by 21% or more.
This guide covers how intermittent leave works across the FMLA, ADA, and PWFA, what your obligations are, and practical steps to stay compliant as caseloads grow.
Understanding Intermittent Leave and Consecutive Leave
Intermittent leave refers to time off taken in separate blocks of time for a single qualifying reason. Or, employees can use intermittent leave to reduce their work schedule. This allows them to work fewer hours per day or per week.
Consecutive leave involves taking time away from work all at once, typically spanning several days or weeks.
Consecutive leave is easier to plan, as it has clear start and end dates. Intermittent leave, however, can be unpredictable in length and can be taken without much notice. This makes it harder to manage.
For example, an employee recovering from surgery might take six weeks of leave. But an employee with chronic migraines may need leave at different times during the year when symptoms happen. The employee would call in as soon as symptoms occur, without much notice.
AbsenceSoft’s recent State of Leave and Accommodations revealed the top three reasons for leave:
- To recover from their own illness or injuries: 57%
- To manage their own mental health-related issues: 47%
- To care for an aging parent or relative: 37%
These numbers show how common intermittent leave has become. Many of these situations—particularly mental health and caregiving responsibilities—often require flexible, intermittent absence arrangements rather than extended continuous leave.
Intermittent Leave and Mental Health
The report found that mental health conditions are a top driver of both leave and accommodations requests. Employees experiencing mental health conditions often qualify for intermittent leave under applicable laws. For a mental health condition to qualify for protected leave, it must meet the definition of a serious health condition or disability.
Conditions such as depression, anxiety, PTSD, and bipolar disorder can significantly impact an employee’s ability to work consistently. Both the DOL and EEOC say that conditions like these often qualify as serious health conditions. Employees struggling with these conditions may require time off during acute episodes, or for ongoing needs like therapy and medication management.
Intermittent Leave Under the Family and Medical Leave Act (FMLA)
The Family and Medical Leave Act (FMLA) allows eligible employees to take up to 12 workweeks of unpaid, job-protected leave in a 12-month period for certain family and medical reasons. Employees may take FMLA leave intermittently or on a reduced schedule when:
- The employee has a serious health condition requiring medical treatment
- The employee needs to care for family members with serious health conditions
- The employee needs to care for a newborn or newly adopted child (if the employer agrees)
- The employee faces qualifying exigencies arising from a family member’s military service
To qualify for FMLA leave, employees must:
- Work for a covered employer
- Have worked for the employer for at least 12 months
- Have at least 1,250 hours of service during the 12 months before leave begins
- Work at a location where the employer has at least 50 employees within 75 miles
Employers have several requirements under FMLA:
- They must maintain health insurance coverage for employees on FMLA leave
- Employees must be restored to their original or equivalent position when they return
However, these are not difficult to fulfill when an employee takes small increments of leave. But when intermittent leave is needed for planned medical treatment, employees must make an effort to minimize disruption to business operations. Employers can also temporarily transfer employees to different jobs that can better accommodate intermittent leave.
Intermittent Leave Under the Americans with Disabilities Act (ADA)
The Americans with Disabilities Act (ADA) requires employers to provide reasonable accommodations to qualified employees with disabilities, which may include intermittent leave. Unlike the FMLA, the ADA doesn’t specify a maximum amount of leave time. It instead focuses on what is “reasonable” given the specific circumstances.
Employees qualify for ADA protections when they have a physical or mental impairment that substantially limits one or more major life activities. Intermittent leave might be appropriate for employees who need periodic absences for:
- Medical appointments related to their disability
- Episodic flare-ups of symptoms
- Recovery time after treatments
Employers must engage in the interactive process when an employee requests intermittent leave under the ADA. Other accommodations employers can offer as part of the interactive process include adjusting work schedules, reassigning non-essential tasks, or making other workplace changes.
This can happen in addition to or instead of taking leave. The ADA applies to employers with 15 or more employees. It also covers a broader range of medical conditions than the FMLA’s “serious health condition” standard.
Intermittent Leave Under the Pregnant Workers Fairness Act (PWFA)
The Pregnant Workers Fairness Act (PWFA) requires employers to provide reasonable accommodations to employees for limitations related to pregnancy, childbirth, or related medical conditions. Intermittent leave may be an appropriate accommodation under this law.
Employees qualify for PWFA protections when they have limitations related to pregnancy, childbirth, or related medical conditions and can perform the essential functions of their job with reasonable accommodation. The PWFA applies to employers with 15 or more employees.
Intermittent leave might be appropriate for pregnant workers who need:
- Time off for prenatal appointments
- Rest breaks or modified schedules due to pregnancy-related symptoms
- Temporary absences for pregnancy-related complications
Employers must engage in a swift interactive process when an employee makes a request. The employer cannot require pregnant workers to take leave if another reasonable accommodation would allow them to continue working.
Can an Employer Deny Intermittent Leave?
Employers cannot deny intermittent leave that is protected under the FMLA, ADA, or PWFA. However, there are legitimate ways to manage and structure it:
- Require proper medical certification. Under the FMLA, you may request certification from a health care provider and require recertification every six months for ongoing conditions.
- Temporarily transfer the employee. If intermittent leave is foreseeable, you may temporarily reassign an employee to an equivalent role that better accommodates the schedule disruption, with the same pay and benefits but different duties.
- Establish clear call-out procedures. Employers can require employees to follow reasonable notification procedures for unforeseeable leave, as long as those procedures do not conflict with FMLA rights.
Denying, delaying, or discouraging leave requests that meet eligibility criteria can create significant legal exposure under the DOL.
Intermittent Leave and Manager Training
Your frontline managers are often the first point of contact for intermittent leave requests. According to the 2026 State of Leave and Accommodations report, managers who are not properly trained on leave policies are one of the most commonly cited compliance challenges HR leaders face.
A manager who does not recognize an absence as a potential FMLA trigger, or who handles a request informally without involving HR, can expose your organization to complaints and litigation before your team even knows there was an issue.
Key things managers need to know:
- They do not need to wait for an employee to say “FMLA.” If an absence sounds like it could qualify, HR should be notified immediately.
- They cannot deny a request informally. All requests must be routed to HR.
- They should never discuss the reason for an employee’s absence with the rest of the team.
Regular, documented manager training is one of the most straightforward ways to reduce compliance risk in your intermittent leave program.
Best Practices for Managing Intermittent Leave
Beyond manager training, a few foundational practices make the day-to-day administration of intermittent leave more consistent and defensible.
- Implement accurate tracking systems that capture the frequency, duration, and reasons for intermittent absences.
- Create accessible request processes that allow employees to submit intermittent leave requests easily, including clear documentation requirements.
- Develop notification procedures to alert impacted managers and colleagues about absences, especially in industries like healthcare and education that require replacement workers.
- Establish clear communication channels between HR, managers, and employees to maintain transparency throughout the intermittent leave process.
- Document all leave-related interactions thoroughly to demonstrate compliance with applicable laws and maintain a comprehensive record of accommodations provided.
How Technology Helps HR Manage Intermittent Leave
Intermittent leave is one of the hardest leave types to manage manually. The incremental tracking, the last-minute callouts, and the recertification timelines all add up quickly. Purpose-built leave management software can take a significant amount of that work off your team’s plate.
- Self-service portals enable employees and managers to submit, review, and approve leave requests efficiently without cumbersome paperwork.
- Automated notifications alert impacted managers and colleagues about approved absences, enabling better workforce planning and minimizing disruption.
- Centralized systems of record provide a comprehensive view of every employee’s leave usage, helping managers identify patterns and ensure compliance with entitlement limits.
- Fax barcoding and texting capabilities allow employees to quickly provide required medical documentation, reducing delays in leave approval.
- The AbsenceSoft Compliance Engine™ automatically calculates which entitlements employees are eligible for when they make a leave request.
- Reporting and access to real-time data provide insights into leave usage and trends. This helps organizations make data-driven decisions about staffing and policy adjustments.
Don’t let the complexity of intermittent leave management overwhelm your HR team. Schedule a call for a demo of AbsenceSoft with a CLMS-certified specialist today.
FAQ about Intermittent Leave
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Intermittent leave is taken in separate, individual blocks of time as needed. A reduced schedule is an ongoing arrangement where an employee works fewer hours each day or week for a set period. Both are forms of intermittent leave under the FMLA, but they work differently in practice and require different tracking approaches.
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Yes. Conditions such as anxiety, depression, PTSD, and bipolar disorder can qualify as serious health conditions under the FMLA or as disabilities under the ADA, making employees eligible for intermittent leave. Medical certification from a licensed provider is typically required.
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If a pregnant employee needs periodic time off for prenatal appointments, pregnancy-related symptoms, or related medical needs, intermittent leave may be an appropriate accommodation under the PWFA. Employers must engage in the interactive process promptly and cannot require an employee to take leave if another accommodation would allow them to keep working.
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Yes. Under the FMLA, leave can be taken in increments as small as one hour, though the minimum increment can vary depending on your timekeeping system. This is one of the reasons accurate tracking is so important. Small increments add up and must be counted against the employee’s total entitlement.
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Managers should notify HR as soon as possible rather than handling the request on their own. They do not need to wait for an employee to specifically mention FMLA or the ADA. If the absence sounds like it could qualify for protected leave, HR needs to be involved from the start.