What Is On-Call Time?
On-call time refers to hours when an employee must be available to work if needed, even when they're sitting at home rather than actively working. Whether on-call time is compensable depends on how restrictive the requirements are on the employee's personal time.
This distinction matters significantly for businesses in healthcare, IT, facilities management, and other fields where 24/7 coverage requires employees to be reachable outside normal working hours.
The Basic Legal Standard
The Fair Labor Standards Act uses a simple test: if employees are "engaged to wait," they must be paid. If they're "waiting to be engaged," payment is generally not required.
The key question is whether the on-call restrictions are so significant that employees cannot use the time effectively for their own purposes.
Factors That Determine Compensability
Courts consider several factors when deciding if on-call time must be paid:
Geographic Restrictions
Must the employee remain:
- On the employer's premises (almost always compensable)
- Within a certain radius of the workplace
- At home
- Anywhere with no location requirements
The more restricted the location, the more likely the time is compensable.
Response Time Requirements
How quickly must they respond?
- Immediately available (more likely compensable)
- Within 15 minutes
- Within 30 minutes
- Within an hour or more (less likely compensable)
Shorter response times restrict personal activities more severely.
Frequency of Calls
How often does the employee actually get called?
- Constant interruptions (more likely compensable)
- Several calls per shift
- Occasional calls
- Rarely called (less likely compensable)
Frequent calls prevent employees from engaging in personal activities.
Ability to Engage in Personal Activities
Can the employee:
- Leave home to run errands
- Attend social events
- Consume alcohol
- Travel outside a certain area
- Engage in leisure activities
The more personal freedom they retain, the less likely the time is compensable.
Contractual Requirements
Written agreements matter:
- Does the policy explicitly restrict activities?
- Are there explicit geographic limits?
- What activities are prohibited during on-call periods?
Examples of Compensable On-Call Time
Must Stay On-Site
A facilities manager required to remain on the employer's premises overnight while on call must be paid for all hours, even if they can sleep or relax.
Severe Geographic Restrictions
An employee required to remain within 5 minutes of the workplace would likely be entitled to pay because this severely limits where they can be and what they can do.
Constant Interruptions
An IT worker who receives on-call pages every 30-60 minutes throughout the night cannot effectively use the time for personal purposes and should be compensated.
Restricted Activities
If employees cannot drink alcohol, must stay sober, or cannot engage in certain activities during on-call time, these restrictions may make the time compensable.
Examples of Non-Compensable On-Call Time
Minimal Restrictions
An employee who carries a company phone but can go anywhere, do anything, and simply must respond within 60 minutes if called is probably not entitled to on-call pay.
Rare Calls
Someone on call one week per month who rarely receives actual calls and has no geographic restrictions retains sufficient freedom that the time likely isn't compensable.
Long Response Times
Requiring someone to respond within 2 hours generally allows enough freedom for personal activities that the time isn't compensable.
Sleep Time During On-Call Periods
Special rules apply to employees who stay overnight at work:
Shifts Under 24 Hours
All time must be paid, including sleep time, unless the employee is completely relieved of duty.
Shifts 24 Hours or More
Employers and employees can agree to exclude up to 8 hours of sleep time and meal periods from compensable time if:
- Adequate sleeping facilities are provided
- The employee gets at least 5 hours of uninterrupted sleep
- Any interruptions for work are paid
If the employee gets less than 5 hours of uninterrupted sleep, the entire sleep period must be paid.
Industry-Specific Applications
Healthcare
Doctors, nurses, and other healthcare workers are frequently on call. Whether this time is compensable depends heavily on restrictions:
- Required to stay in the hospital: compensable
- Can be anywhere but must arrive within 20 minutes: likely compensable
- On call from home with 60-minute response time: likely not compensable
IT and Technology
Tech workers often carry on-call responsibilities. Factors include:
- Can they respond remotely or must be on-site?
- How often do pages actually occur?
- What's the required response time?
- Can they engage in personal activities?
Facilities and Maintenance
Maintenance workers may be on call for emergencies:
- Living on-site while on call: compensable
- Going home with a beeper: likely not compensable unless restrictions are significant
Emergency Services
Volunteer firefighters and emergency responders have specific rules under the FLSA with special provisions for their on-call status.
Paying for On-Call Time
If Time Is Compensable
When on-call time must be paid:
- Include it in hours worked for overtime calculations
- Pay at least minimum wage
- Pay overtime (time-and-a-half) if over 40 hours/week
- Track all on-call hours carefully
On-Call Pay vs. Call-Back Pay
Many employers pay:
- Lower rate for on-call time when not actively working
- Regular or higher rate when actually called in to work
This is legal as long as:
- The on-call rate meets minimum wage
- You correctly calculate the weighted average for overtime purposes
- State law doesn't prohibit different rates
Call-Back Minimum Pay
Some employers guarantee minimum pay when an employee is called back (e.g., minimum 2 hours pay even if the work takes 30 minutes). This is good practice and improves employee satisfaction.
Creating Clear On-Call Policies
Your policy should specify:
Who Is On-Call When
- Rotation schedules
- How on-call duty is assigned
- How to swap on-call assignments
- Consequences for missing on-call responsibilities
Response Requirements
- Maximum response time
- Whether response must be in-person or can be remote
- What constitutes an acceptable excuse for unavailability
Geographic and Activity Restrictions
Be explicit about:
- Whether employees can leave home
- How far they can travel
- Whether they can consume alcohol
- Any activities that are prohibited
Compensation
Clearly state:
- Whether on-call time itself is paid
- The rate for on-call standby time
- The rate when actually called to work
- Minimum guarantees for call-backs
Equipment and Technology
- Who provides the phone/pager
- Expectations for checking messages
- What happens if equipment fails
Minimizing Compensable On-Call Time
If you want to avoid paying for on-call periods:
Provide Maximum Freedom
- Don't require employees to stay home
- Allow longer response times (60+ minutes)
- Don't prohibit personal activities
- Minimize actual calls during on-call periods
Use Rotations
Spread on-call duty across multiple employees so no one is on-call excessively.
Leverage Technology
Allow remote responses when possible so employees don't have to come on-site.
Consider Paying Anyway
Even if not legally required, offering on-call pay improves recruitment, retention, and morale.
Common On-Call Mistakes
Assuming It's Never Compensable
Many employers incorrectly assume on-call time is never paid. When restrictions are significant, you owe wages.
Inconsistent Policies
Treating on-call time differently for different employees doing similar work creates problems.
Not Tracking On-Call Hours
If on-call time is compensable, you must track it for overtime calculations.
Verbal-Only Policies
Put on-call requirements and compensation in writing to avoid disputes.
Over-Restricting Employees
Every restriction you add makes it more likely the time is compensable. Only impose restrictions that are truly necessary.
State Law Considerations
Some states have specific on-call requirements:
California
"Reporting time pay" requires minimum payment when employees report for scheduled work or are called back. On-call time itself follows federal standards.
Massachusetts
Three-hour minimum for reporting time when employees come into work.
Check your state's requirements as they may be more generous to employees than federal law.
Documentation and Record-Keeping
Maintain records of:
- On-call schedules
- Actual calls received during on-call periods
- Time spent responding to calls
- Any compensation paid for on-call time
- Geographic and activity restrictions in place
This documentation is essential if the Department of Labor or a court reviews your practices.
The Gray Areas
Some situations remain genuinely unclear:
Carrying a Work Phone
Simply carrying a smartphone doesn't make all non-working hours compensable, but if restrictions are severe or calls are constant, it might.
Partial Restrictions
What about "try to stay within 45 minutes of the office"? The murkier the restriction, the harder it is to predict whether time is compensable.
When in Doubt
If you're uncertain whether your on-call requirements create compensable time:
- Consult with employment counsel
- Err on the side of paying
- Reduce restrictions to make it clearly non-compensable
On-call time creates complex questions about compensability. The key is analyzing how much freedom employees retain during on-call periods. When restrictions are minimal and calls are rare, on-call time usually isn't compensable. When employees are tethered closely to work with limited freedom, payment is required. Document your requirements clearly and evaluate them against FLSA standards to avoid violations.
