American workers have no federal right to a flexible schedule. Unlike the UK's Employment Relations (Flexible Working) Act 2023 — which gives employees a statutory right to request flexitime — U.S. law leaves flexible work arrangements almost entirely to employer discretion. That gap matters when you're drafting a request, because the wrong framing can get you denied before your manager finishes reading the first paragraph.
What the law actually gives you
No federal statute mandates that employers grant remote work or reduced hours on request. Three legal angles do exist, however, and knowing which one fits your situation changes everything about how you write the letter.
The ADA reasonable accommodation route. Under the Americans with Disabilities Act, 42 U.S.C. § 12112, covered employers (15 or more employees) must provide reasonable accommodations to qualified employees with disabilities, unless doing so causes undue hardship. Courts and the EEOC have consistently held that remote work and reduced schedules can qualify as reasonable accommodations. The employer cannot deny the request simply because they prefer in-person work — they must engage in an "interactive process" to explore alternatives. If your health condition meets the ADA definition of disability, lead with this. Reference the ADA explicitly in your letter, note that you're requesting accommodation under the statute, and attach or offer medical documentation from your treating provider.
The FMLA reduced-schedule option. The Family and Medical Leave Act (29 U.S.C. § 2612) allows eligible employees to take leave on a reduced-schedule or intermittent basis for qualifying serious health conditions — your own or an immediate family member's. You can use FMLA to drop from 40 to 32 hours per week while you recover from surgery, manage a chronic condition, or care for a parent. The key conditions: you must work for a covered employer (50+ employees), have at least 12 months of service, and have logged 1,250 hours in the past year. FMLA is job-protected, meaning your employer cannot terminate you for taking it. A formal FMLA Request Form triggers the statutory timeline — your employer has five business days to determine eligibility and must notify you in writing.
State law. Several states layer additional protections on top of federal law. California's Fair Employment and Housing Act (Gov. Code § 12940) and New York's Human Rights Law (Executive Law § 296) both require accommodation for pregnancy-related conditions and a broader range of disabilities than the federal floor. Some state family leave laws also carry reduced-schedule rights. Before you draft anything, check whether your state has stronger protections than what federal law offers.
The business-case framing — even when you have rights
Here is the counterintuitive part: even if you qualify for ADA accommodation or FMLA, you will get a better outcome — and preserve the working relationship — if you pair the legal request with a concrete business case. HR and managers are more likely to approve arrangements they perceive as operationally manageable. A letter that reads purely as "I am entitled to this" tends to put people on the defensive. One that reads as "here is how this works for the team" moves faster.
The business case should address four points:
- Coverage during your off hours. Name who covers urgent matters and how. If you're shifting to a 32-hour schedule, identify the two or three scenarios where a client or colleague might need a response, and explain your plan.
- Communication protocols. Specify your core availability window — say, 9 a.m. to 3 p.m. Pacific — and how you'll handle after-hours messages (not at all, or within X hours the following morning).
- Output metrics, not hours. Propose a 30- or 60-day check-in where you and your manager review actual deliverables, not badge-swipe data. This repositions the conversation from attendance to results.
- Technology and access. If working remotely, note that you already have (or will arrange) VPN access, a secure home network, and whatever equipment your employer requires.
What to include in the letter
A flexible work request letter should be a single page — two at most. Longer letters get skimmed. Structure it as follows.
Opening paragraph. State the request plainly: you are asking to work remotely four days per week, or to reduce your schedule from 40 to 32 hours, effective a specific date. Do not bury the ask in background. Name the legal basis if one applies (ADA accommodation request, FMLA reduced-schedule leave) or label it a general flexible work request if you're relying on goodwill rather than statute.
Context paragraph. One paragraph explaining why — health condition requiring accommodation, caregiving responsibilities, or simply a productivity argument if you have no legal peg. Keep it factual. Oversharing personal medical detail is unnecessary; a reference to a condition managed by your physician is enough.
Operational plan. Two to three bullet points covering coverage, availability, and metrics. Short and specific.
Proposed trial period. Offer a 30- or 60-day trial with a defined review point. Trials lower the perceived risk for an employer. Employers who would reject a permanent arrangement will often approve a pilot.
Closing. One sentence inviting a meeting to discuss. Sign off professionally.
What not to do
Do not threaten legal action in the first letter. Mentioning EEOC charges or discrimination claims before any informal conversation creates an adversarial dynamic that makes accommodation less likely, not more. If your employer denies a request that appears legally required, that is the point to consult an employment attorney — not the moment you hit send on the opening letter.
Do not attach unsolicited medical records. For ADA accommodation requests, offer to provide documentation from your provider; let HR ask for it on their timeline using their standard process. Uploading your full chart is unnecessary and can create privacy complications.
Do not make the request verbally and call it done. A letter — whether email or hard copy — creates a written record of when you requested accommodation and what you asked for. If the employer later retaliates or terminates, that record matters. Date the letter and keep a copy.
Timing your request
FMLA requests are time-sensitive in a specific way. If the need for leave is foreseeable — planned surgery, a scheduled course of treatment — the EEOC and Department of Labor regulations at 29 C.F.R. § 825.302 require you to give at least 30 days' notice. For unforeseeable needs, notice must be given as soon as practicable, generally the same day you learn of the need or the following business day. Missing these windows does not forfeit your FMLA rights, but it can allow the employer to delay the start of protected leave.
For non-FMLA requests, timing is less regulated but still strategic. Asking during a performance review cycle — when your contributions are already on the table — tends to go better than asking during a reorganization or budget freeze.
After you submit the letter
An employer who receives an ADA accommodation request cannot simply ignore it. The ADA requires an "interactive process," which the EEOC interprets as a good-faith dialogue to identify accommodations that work for both parties. If your employer goes silent for more than two weeks on an ADA request, a follow-up email noting that you are "continuing to engage in the interactive process and awaiting a response" is a low-key way to create a paper trail without escalating.
FMLA timelines are more precise. Under 29 C.F.R. § 825.300, the employer must provide an eligibility notice within five business days of learning you need leave, and a designation notice within five business days of receiving sufficient medical certification.
If your employer denies a request you believe is legally required, the next steps are: document the denial in writing, consult an employment attorney (many offer free initial consultations), and consider filing a charge with the EEOC for ADA matters or reviewing your FMLA rights with the Department of Labor.
The letter itself is straightforward. The strategy around it — knowing which legal hook applies, framing the operational case clearly, and keeping the tone collaborative — is what separates requests that get approved in a week from those that sit in a manager's inbox until everyone forgets about them. Forms Legal offers templates for employment and leave documentation, including a remote work policy your employer may already require you to sign once an arrangement is approved.
Need the document itself? Download the free template →
This article is general information, not legal advice — see our accuracy & editorial policy. Confirm the cited law is current before relying on it.