Nebraska began enforcing the new federal Medicaid work requirement on May 1. Montana and Arkansas followed on July 1. Every remaining expansion state has until January 1, 2027, roughly five months, to do the same thing.
What "the same thing" involves is not a policy tweak. States must rewrite eligibility rules, connect verification systems to payroll and wage databases, build a process for identifying who is exempt, design and mail compliant notices, train eligibility workers, and in some cases pass authorizing legislation. CMS estimates the average cost at roughly $15 million per state, about $660 million nationally.
The reason this belongs in a health section rather than a government one is that the failure mode is not policy disagreement. It is a working parent whose hours were verified late, or a cancer patient whose exemption paperwork sat in a queue, losing coverage in February.
The Deadline Is Firmer Than It Looks
The statute allows the HHS Secretary to grant states a temporary exemption from the January 1 date if they demonstrate a good faith effort to comply, with extensions available through December 31, 2028. On paper, that is a meaningful safety valve.
The interim final rule narrows it considerably. An initial exemption is limited to six months. States must submit a detailed accounting of actions taken, barriers encountered, a plan with timelines and milestones, and any exigent circumstances such as a cyberattack or emergency. They must update that information quarterly and keep demonstrating good faith to receive any extension. The Center for Health Care Strategies notes that CMS has indicated extensions will be granted only where extraordinary or unexpected issues hinder implementation.
The sharpest number sits in the rule's own impact analysis. It assumes ten states will request a good faith exemption and that two will receive one. State Health and Value Strategies at Princeton called that estimate "difficult to reconcile with the realities states will face" given the scope of the build.
Whether that assumption holds is not a technical footnote. If eight states that ask for more time are told to proceed anyway, the coverage consequences land on enrollees in those states.
What States Actually Have to Build
The verification architecture is the hard part, and it has two halves.
The first is confirming work. States are expected to check payroll and wage databases automatically so that most enrollees never submit anything. That works well for salaried employees with a single employer. It works poorly for the people most likely to be in the Medicaid expansion group: gig workers, seasonal agricultural and construction labor, home care aides paid through multiple agencies, restaurant workers with fluctuating hours, and the self-employed. Every one of those cases falls through to a manual process that requires the enrollee to notice a notice.
The second half is identifying exemptions without asking. The rule expects states to use claims and encounter data to flag people who are pregnant, disabled, medically frail, caring for a child under 14, or otherwise excluded before requiring them to prove it. Managed care organizations hold the richest data for that purpose, but the rule bars them from determining compliance and restricts delegation of certain functions, which limits how much of that work can be outsourced.
The rule also constrains the timing windows states may use. New applicants must show compliance for one to three consecutive months immediately before applying, and current enrollees for one or more months between determinations. States cannot demand longer lookback periods.
Layered on top, a separate provision of the 2025 reconciliation law requires states to redetermine eligibility for the expansion population every six months rather than annually, also starting January 1, 2027. States are building two systems at once.
What Nebraska's Head Start Does and Does Not Prove
Nebraska has roughly three months of operating experience the rest of the country lacks, which makes it the closest thing to a live test of how the requirement behaves outside a spreadsheet.
It is also a limited test. Nebraska has a smaller expansion population than California, New York or Michigan, with a different labor market and different data infrastructure. A verification workflow that clears a Nebraska caseload does not automatically scale to a state with millions of expansion enrollees and a larger share of irregular employment.
What earlier state experience with work requirements does suggest, consistently, is where people fall out. In prior programs, the losses concentrated among people who were working or exempt but did not complete the reporting, often because a notice went to an old address or arrived in a format they did not recognize as urgent. That is a systems failure rather than a compliance failure, and it is what a compressed build timeline tends to produce.
The Exemption Fight Running Alongside
None of this is settled law. Twenty-five states and the District of Columbia sued CMS in late June, and a federal judge in Massachusetts heard argument on a preliminary injunction motion this week. The central dispute is the rule's addition of a requirement that medically frail people also show their condition significantly impairs their ability to work, a test Congress did not write, along with limits on accepting self-declarations.
The American Cancer Society Cancer Action Network said the rule "makes it more difficult for people who are medically frail", including people with cancer, to obtain the exemption Congress intended.
The plaintiff states have separately asked CMS for a six-month delay under the good faith provision. If CMS grants it, both the litigation timeline and the implementation timeline shift. If it does not, states are building toward January while arguing about what they are building.
What Enrollees Should Do Before States Are Ready
The single most useful action is confirming that the state Medicaid agency has a current address, phone number, and email, because notices begin going out by August 31 and the largest historical source of coverage loss is a notice nobody received.
People with irregular income should assume automated verification will not find them, and should start keeping pay stubs, employer letters, school enrollment records, volunteer logs or self-employment records in one place. People with a serious health condition should ask their state agency what documentation the medically frail exemption will require, and ask a treating clinician whether they can supply it, rather than waiting until a determination is pending.
What Happens Next
Three decision points sit between now and January. The court's ruling on the preliminary injunction. CMS's response to state requests for good faith delays, which will show whether the two-of-ten assumption reflects agency intent. And the August 31 notice deadline, which is the first moment most enrollees will encounter any of this.
The newest confirmed fact is that 40 states and the District of Columbia have five months to build systems Nebraska has been running since May, at an estimated $15 million each. The people most affected are working-age adults with irregular hours or serious health conditions. The most reasonable step is updating contact information with the state Medicaid office. The central uncertainty is how many states will be ready and what happens to enrollees in those that are not.
Frequently Asked Questions
Which states are already enforcing the requirement? Nebraska began May 1, 2026, and Montana and Arkansas began July 1. All other expansion states must comply by January 1, 2027.
What does implementation cost states? CMS estimates an average of roughly $15 million per state, about $660 million nationally, to rebuild eligibility and verification systems.
Can states get more time? They can request a good faith effort exemption, limited to six months initially with quarterly updates required. CMS has indicated extensions will be granted only for extraordinary circumstances, and its own analysis assumes two of ten requests will be approved.
Will I have to report my hours every month? Most states plan to verify through payroll and wage databases automatically. People with gig, seasonal, cash, or multi-employer income are the most likely to be asked for documents.
How do exemptions work? States are expected to identify exempt people from claims data where possible. The disputed piece is the medically frail exemption, which the rule says also requires showing the condition significantly impairs ability to work.
When will I hear from my state? States must begin notifying enrollees by August 31, 2026. Make sure your address and contact details are current.
Could courts stop this? Parts of the rule are being challenged by 25 states and the District of Columbia. A preliminary injunction hearing was held this week, and no ruling had been issued as of publication.
