A company can deny sick time in some situations and not in others. Whether the denial is legal depends on which laws cover you, whether your condition qualifies under those laws, whether you have leave available, and whether you followed your employer’s notice and documentation rules. Federal law does not guarantee paid sick leave at all. It does protect unpaid leave for serious medical conditions, and more than 20 states plus many cities now require employers to provide paid sick days for a broader range of reasons.
When a Denial Is Legal
Employers have several legitimate grounds to refuse a sick time request. Before assuming your rights were violated, check whether any of these apply.
- You have no balance available. If you have not accrued any sick time, or you already used your allotment for the year, the employer is not obligated to give you more paid time off unless another law (such as the ADA) independently requires it.
- You did not follow the company’s procedures. Skipping the call-in rules or ignoring a valid request for documentation can be grounds to deny or delay even FMLA-protected leave.1eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
- Your condition does not qualify. If the illness is not a “serious health condition” under the FMLA and no state or local sick leave law covers it, the employer has no legal obligation to approve time off.
- Your medical certification is incomplete. For FMLA leave, the employer can require certification. If yours is incomplete, the employer must tell you in writing what is missing and give you seven calendar days to fix it. If you still do not provide a complete certification, the leave can be denied.2U.S. Department of Labor. FMLA Advisor – Medical Certification – General
- You are inside a waiting period. Many state paid sick leave laws include a short waiting period after hire before new employees can start using accrued time. A denial during that window can be valid.
- You are not eligible for the law you are relying on. The FMLA, for example, requires 12 months of employment, 1,250 hours worked in that period, and 50 or more employees within 75 miles of your worksite. Missing any one of those means the FMLA does not apply.3U.S. Department of Labor. Family and Medical Leave (FMLA)
When a Denial Is Illegal
An employer crosses the line when it interferes with rights you actually have or punishes you for trying to use them. Federal law splits these into two categories.
Interference
It is illegal for an employer to interfere with, restrain, or deny the exercise of any right the FMLA provides.4Office of the Law Revision Counsel. 29 USC 2615 – Prohibited Acts Interference includes outright refusing a valid leave request, but it also covers subtler tactics: discouraging you from asking for leave, requiring you to keep working while on leave, or counting FMLA absences under a no-fault attendance policy.5U.S. Department of Labor. Fact Sheet 77B – Protection for Individuals Under the FMLA That last one is a common trap. If your company uses a points-based attendance system and assigns points for FMLA-covered absences, the system itself violates the law.
Retaliation
Separately, it is illegal for an employer to fire, demote, discipline, or otherwise discriminate against you for requesting or using FMLA leave, filing a complaint, or participating in an FMLA proceeding.4Office of the Law Revision Counsel. 29 USC 2615 – Prohibited Acts Your employer also cannot use the fact that you took FMLA leave as a negative factor in decisions about promotions, raises, or performance reviews.6eCFR. 29 CFR 825.220 – Protection for Employees Who Request Leave or Otherwise Assert FMLA Rights
Many state and local paid sick leave laws include their own anti-retaliation provisions. If your employer fires you or cuts your hours shortly after you use protected sick time, that timing alone can support a retaliation claim.
Which Laws Might Protect You
A denial that looks valid under one law can be completely illegal under another. Three federal statutes and a growing patchwork of state and local laws all touch sick leave.
The Family and Medical Leave Act
The FMLA is the main federal law. It does not require your employer to pay you, but it gives eligible employees up to 12 weeks of unpaid, job-protected leave per year for qualifying medical and family reasons.7U.S. Department of Labor. Family and Medical Leave Act Job-protected means your employer must hold your position (or an equivalent one) and keep your group health benefits running on the same terms while you are away. Qualifying reasons include your own serious health condition, caring for a spouse, child, or parent with a serious health condition, the birth or adoption of a child, and certain needs related to a family member’s military service.
The ADA and the Pregnant Workers Fairness Act
The Americans with Disabilities Act can require your employer to grant unpaid leave as a reasonable accommodation for a disability, even if you do not qualify for FMLA leave. The EEOC has stated that this obligation applies even when the employer’s own policy would not cover you, when you have not worked long enough to be eligible, or when you have already used up all your available leave.8U.S. Equal Employment Opportunity Commission. Employer-Provided Leave and the Americans with Disabilities Act The only limit is that the leave cannot impose an undue hardship on the employer’s operations.
The Pregnant Workers Fairness Act, which took effect in 2023, requires employers with 15 or more employees to provide reasonable accommodations for limitations related to pregnancy, childbirth, or related medical conditions. Leave is one of those accommodations, and an employer cannot force a pregnant worker to take leave if a different accommodation would work instead.9U.S. Equal Employment Opportunity Commission. What You Should Know About the Pregnant Workers Fairness Act
State and Local Paid Sick Leave
More than 20 states plus the District of Columbia have enacted paid sick leave mandates, along with many cities. Most follow a similar accrual structure with an annual cap. These laws typically cover a broader range of situations than the FMLA: your own illness (including minor ones like a cold), a sick family member, preventive appointments, and in many jurisdictions reasons related to domestic violence or sexual assault. If you work in a state or city with a mandate, your employer generally cannot deny a request that complies with the law’s requirements, even for a routine illness that would never qualify under the FMLA. Check your state labor department’s website for the accrual rates, caps, and eligible uses that apply to you.
What Counts as a “Serious Health Condition”
This is where employees most often get tripped up. The FMLA does not cover every illness. A “serious health condition” generally means one that involves inpatient hospital care or continuing treatment by a health care provider. The common cold, the flu, earaches, upset stomachs, routine dental problems, and ordinary headaches typically do not qualify.10eCFR. 29 CFR 825.113 – Serious Health Condition Taking over-the-counter medication or resting in bed, by itself, does not count as a regimen of continuing treatment either.
If your condition does not clear that bar, your employer is not required to approve FMLA leave for it. You would need to rely on a state or local paid sick leave law, the ADA, or your company’s own policy instead.
Notice, Doctor’s Notes, and Certifications
Procedural mistakes are one of the most common reasons legitimate leave requests get denied. Employers can enforce reasonable notice and documentation rules.
Most employers require you to call a specific person or number before your shift starts. Texting a coworker after you were supposed to clock in usually does not satisfy that rule. For foreseeable medical needs like a scheduled surgery or ongoing treatment, the FMLA regulations require 30 days’ notice when possible, and you must make a reasonable effort to schedule treatments so they do not unduly disrupt operations.1eCFR. 29 CFR 825.302 – Employee Notice Requirements for Foreseeable FMLA Leave
Many policies require a doctor’s note after two or three consecutive sick days. That is generally permissible if the employer applies the rule consistently. There are limits on what the note can contain, though. Your employer cannot demand your complete medical records, because those will almost certainly include information unrelated to the absence.11U.S. Equal Employment Opportunity Commission. Enforcement Guidance on Disability-Related Inquiries and Medical Examinations of Employees Under the ADA A note confirming you were seen by a provider and are cleared to return is typically all a routine absence requires.
What You Can Recover If the Denial Was Illegal
An illegal FMLA denial can be expensive for the employer. A successful claim can recover:
- Lost wages and benefits, plus interest.12Office of the Law Revision Counsel. 29 USC 2617 – Enforcement
- Liquidated damages equal to your lost wages and interest combined, effectively doubling the recovery. The employer can only avoid this by proving it acted in good faith and had reasonable grounds to believe it was following the law.12Office of the Law Revision Counsel. 29 USC 2617 – Enforcement
- Reasonable attorney’s fees and expert witness fees, which the court must award to a winning employee.12Office of the Law Revision Counsel. 29 USC 2617 – Enforcement
- Reinstatement to your job or a promotion you were wrongly denied.
The FMLA does not allow emotional distress or punitive damages. Some state leave laws are more generous. State penalties vary: some impose per-employee fines for violations of paid sick leave mandates, and many allow employees to recover liquidated damages on top of the sick pay they were owed.
What to Do If Your Sick Time Is Denied
Start with your company’s sick leave policy. Confirm you actually have accrued time available and that your reason fits an applicable law. Sometimes a denial is a miscommunication about your balance or the type of leave you requested.
If the denial still looks wrong, put everything in writing. Keep copies of your original request, the denial, and any related emails or messages. Ask your manager or HR for a specific written explanation of why the request was refused. A vague “it’s not approved” gives you nothing to evaluate.
For an FMLA violation, you have two options: file a complaint with the Wage and Hour Division of the U.S. Department of Labor, or file a private lawsuit in federal or state court.13U.S. Department of Labor. FMLA Advisor – Enforcement of the FMLA The DOL investigates at no cost to you, and your employer is prohibited from retaliating against you for filing.14U.S. Department of Labor. Information You Need to File a Complaint You generally have two years from the date of the violation to bring a claim, extended to three years if the violation was willful.5U.S. Department of Labor. Fact Sheet 77B – Protection for Individuals Under the FMLA
For violations of the ADA or the Pregnant Workers Fairness Act, file a charge with the Equal Employment Opportunity Commission. For state or local paid sick leave law violations, contact your state’s labor department. Most state agencies have online complaint forms and investigate claims without charge.