Doctor's Note to Return to Work: What Employers Can Require and What They Can't Ask

Most employees searching for a "return to work doctor's note" want to know what to bring back. HR's question is the other side of it: when can we require one, what should it say, and what are we not allowed to ask? The answer depends on why the employee was out. The FMLA, the ADA, workers' compensation and state or local paid sick leave laws each set different rules, and a note policy that ignores them can turn a routine absence into a compliance problem.

When a Return-to-Work Note Is Lawful to Require

After FMLA leave

Under 29 CFR 825.312, an employer may require a fitness-for-duty certification before an employee returns from FMLA leave taken for their own serious health condition, if two conditions are met:

1. The requirement comes from a uniformly applied policy or practice for similarly situated employees.
2. The employer stated in the designation notice that a certification would be required.

The certification may be a simple statement that the employee can return. If the employer wants it to address the employee's ability to perform essential functions, it must have provided a list of those functions with the designation notice. The employee pays for the certification, the employer cannot require second or third opinions, and if the notice was given, the employer may delay restoration until the certification arrives. For intermittent leave, the employer cannot require a note for each absence; it may require one no more often than every 30 days, and only where reasonable safety concerns exist. More detail is in our article on FMLA fitness-for-duty certification.

After non-FMLA sick leave or medical leave (the ADA rule)

The EEOC's enforcement guidance on disability-related inquiries says an employer may ask an employee for a doctor's note or other explanation to substantiate sick leave, as long as it has a policy or practice of requiring this from all employees, with and without disabilities. A request limited to "when did you see a provider and when can you return?" is generally safe. A request that digs into the condition is a disability-related inquiry, which must be job-related and consistent with business necessity. See medical inquiries under the ADA for the broader rules.

After a workplace injury

Workers' compensation claims run on medical status reports. The treating provider typically issues a work status or release stating full duty, modified duty with restrictions, or no work. Many state systems use a standard form for this, and the carrier or third-party administrator (TPA) will want it. Asking for the release is routine; the employer should still route it to the confidential medical file, not the personnel file.

After paid sick leave under a state or local law

This is where most employer policies break. Many paid sick leave laws limit when an employer may require documentation and what it may say. More on that below.

What a Usable Note Says

A note that says "Patient was seen today" helps no one. A usable return-to-work note answers four questions:

• Return date. The date the employee may return.
• Duty status. Full duty, or restricted/modified duty.
• Restrictions, if any. Specific and measurable: "no lifting over 15 lb," "no ladder work," "maximum 6 hours per shift," "seated work only."
• How long restrictions last, or the date of the next visit when they will be reassessed.

The note should also identify the provider and be signed or otherwise authenticated. It does not need a diagnosis, and for most purposes HR should not want one.

The easiest way to get usable notes is to send the employee an employer form for the provider to complete, with the job description attached, rather than relying on whatever pad the clinic uses. The form should list the essential functions and ask the provider to check full duty, restricted duty or no work, then fill in each restriction and its expected end date. Return-to-work training for HR covers building that form into a standard process.

What HR Should Not Ask For

The diagnosis. For a routine return, the job-related questions are whether the employee can work and with what limits. A diagnosis is rarely needed to answer them, and several sick leave laws prohibit requiring it.

Unrelated medical history. Under the FMLA, a fitness-for-duty certification may cover only the condition that caused the leave. Under the ADA, inquiries must be limited in scope to what is needed. "List all medications you take" or "describe any other conditions" fails both tests.

Genetic information. The Genetic Information Nondiscrimination Act (GINA) bars employers from requesting genetic information, which includes family medical history. The EEOC's GINA regulation at 29 CFR 1635.8 includes sample warning language employers can put on medical requests telling providers not to include genetic information; if the employer uses it, genetic information received in response is treated as inadvertently acquired.

Notes the law does not allow you to require. If a state or local sick leave law says documentation may be required only after a set number of consecutive days, a policy requiring a note for every one-day absence violates it for employees in that jurisdiction.

Notes That Are Vague or Conflict With the Job

Vague notes are common. Common examples: "Light duty," with no restrictions listed. "May return as tolerated." A return date with restrictions that contradict the job description, such as "no standing" for a cashier.

How to follow up depends on the leave type.

FMLA. Section 825.312(b) lets the employer contact the health care provider to clarify and authenticate the certification, but clarification may be requested only for the serious health condition for which FMLA leave was taken, and the employer may not delay the employee's return while that contact is being made. HR, a leave administrator or a management official may make the contact, never the employee's direct supervisor (that limit comes from the related rule at 29 CFR 825.307). Write down who called, when, and what was asked.

ADA or non-FMLA leave. Explain to the employee in writing what is missing ("the note says light duty but does not say what you can or cannot do") and give a reasonable time to provide clarification. If the documentation is still insufficient, the EEOC guidance allows the employer to require an evaluation by a provider it chooses, at the employer's expense.

Workers' comp. Ask the adjuster or TPA to get clarification from the treating provider; many states have rules on who may contact the provider and how.

In all three cases, the fix is the same: send the provider the job description and ask specific questions about essential functions.

State Paid Sick Leave Limits on Requiring Notes

State and local paid sick leave laws vary widely, and many restrict documentation. Three examples, verified against the government sources:

Other states and cities have their own thresholds. Check paid sick leave laws by state and confirm the current rule with the state or city labor agency for every location where you have employees. Two practical points:

• When an absence is covered by both a sick leave law and the FMLA, apply the more protective rule to each question. A policy that requires notes after one day for FMLA purposes still cannot be applied to sick leave days in a jurisdiction with a three-day threshold.
• Remote employees are usually covered by the law where they work, not where headquarters is.

Storing the Note

Return-to-work notes, work status reports and fitness-for-duty certifications are medical records. Under 29 CFR 1630.14(c)(1), medical information about current employees must be kept on separate forms and in separate medical files, and the FMLA rules at 29 CFR 825.500(g) require the same for FMLA medical certifications. In practice:

• Keep a separate, access-restricted medical file for each employee.
• Record in the personnel or timekeeping file only what the payroll and scheduling side needs: return date and "cleared" or "cleared with restrictions."
• Tell supervisors the restrictions, not the reason.
• Follow your retention schedule; the FMLA requires that FMLA records be kept for no less than three years.

Make the Process Repeatable

The same note can be lawful under one law and unlawful under another, which is why HR teams benefit from a single written process. The Return-to-Work Training & Certification program covers FMLA return and restoration rights, fitness-for-duty documentation, ADA accommodation, workers' comp interaction and consistent documentation, online and self-paced, with an optional exam for the Certified Return-to-Work Administrator designation.

Frequently Asked Questions

Can my employer require a doctor's note before I come back to work?

Often yes, but it depends on the type of absence and where you work. After FMLA leave for your own serious health condition, an employer may require a fitness-for-duty certification if it has a uniform policy and told you in the designation notice. For other sick leave, the ADA allows a note requirement applied to all employees. State and local paid sick leave laws, however, may allow documentation only after a set number of consecutive days, such as three or more in New Jersey or more than three consecutive workdays in New York City.

Can an employer ask for my diagnosis on a return-to-work note?

Generally the employer does not need it and should not ask. A return-to-work note should state the return date, duty status and any restrictions. Under the FMLA, a fitness-for-duty certification may address only the condition that caused the leave. Under the ADA, inquiries must be limited to what is job-related. Some sick leave laws, including New Jersey's and New York City's, specifically bar employers from requiring the reason or medical condition.

What if the doctor's note just says "light duty"?

Ask for specifics. For FMLA leave, HR or a leave administrator (not the direct supervisor) may contact the provider to clarify the certification, limited to the condition that caused the leave, and may not delay the return while doing so. For other leave, explain in writing what is missing and give the employee time to supply it. Sending the provider the job description and a form with specific restriction fields prevents most vague notes.

Who pays for a return-to-work note?

Under the FMLA, the employee bears the cost of a fitness-for-duty certification. If the employer requires an evaluation by a provider of its own choosing under the ADA, the employer pays. Some local laws shift cost to the employer: New York City requires employers to reimburse fees a provider charges for documentation requested under its sick leave law. Check the rule for each work location.

Can an employer delay my return until I bring a note?

Under the FMLA, yes, if the designation notice said a fitness-for-duty certification would be required. If the notice did not say so, the employer cannot delay restoration on that basis. An employer also cannot delay return while it contacts the provider to clarify a certification it already has. Outside the FMLA, delays must still be consistent with the employer's uniform policy and any applicable sick leave law.

Where should HR keep return-to-work notes?

In a separate, confidential medical file, not the personnel file. The ADA regulation at 29 CFR 1630.14(c)(1) requires medical information about employees to be kept on separate forms and in separate medical files, and the FMLA rules require the same for FMLA medical certifications. Supervisors may be told about work restrictions and accommodations, but not the diagnosis.