MMI and Permanent and Stationary in California Workers’ Compensation: What Happens Next

Short answer: in California workers’ compensation, “permanent and stationary” (P&S) and “maximum medical improvement” (MMI) mean the same thing: your doctor has concluded that your condition is well stabilized and unlikely to change substantially in the next year, with or without treatment. It does not mean you are cured, and it does not end your claim. What changes is the benefit: temporary disability stops, permanent disability payments must start within 14 days if the report finds lasting impairment, the P&S report is turned into a disability rating, and a 60-day clock starts on your employer’s decision whether to offer you work. Medical treatment continues. If you or the insurer disagree with the report, the dispute goes to a qualified medical evaluator or an agreed medical evaluator, and only then does the case move toward settlement or an award. Abdi & Associates, Inc. handles California workers’ compensation claims in house, statewide, and can review a P&S report before its deadlines run. Free consultation. Call 24/7, English and Spanish: (888) 772-2529. No attorney fee unless there is a recovery.

What “permanent and stationary” and “MMI” mean in California

The definition is in the regulations. Under Cal. Code Regs., tit. 8, section 10152, “A disability is considered permanent when the employee has reached maximal medical improvement, meaning his or her condition is well stabilized, and unlikely to change substantially in the next year with or without medical treatment.” Doctors, claims administrators and judges use “permanent and stationary,” “P&S,” “MMI” and “maximal medical improvement” interchangeably for the same milestone: the point at which the doctor stops expecting meaningful recovery and starts measuring what is left.

Three things MMI does not mean. It does not mean you are healed; many workers are declared permanent and stationary while still in pain, still restricted and still needing care. It does not mean your claim is over; permanent disability, future medical care and the job displacement voucher are all decided after the P&S report. And it does not mean treatment stops; the employer’s duty to provide reasonable medical care continues, and the report is supposed to describe the future care you will need.

Who decides you are MMI, and what the P&S report must contain

Your primary treating physician usually makes the first MMI finding, though a qualified medical evaluator (QME) or an agreed medical evaluator (AME) can also find you permanent and stationary. The treating doctor then writes the permanent and stationary report, often on the DWC PR-4 form. Because the report drives your rating, your future care and your job status, Cal. Code Regs., tit. 8, section 10682 lists what medical reports “should include where applicable,” among them:

• the date of examination, the history of the injury and the patient’s complaints (the subjective factors), plus the records relied on and your medical history, including prior injuries;
• the findings on examination (the objective factors) and a diagnosis;
• an “opinion as to the nature, extent and duration of disability and work limitations, if any,” which is where your work restrictions come from;
• the cause of the disability, and “treatment indicated, including past, continuing and future medical care”;
• an “opinion as to whether or not permanent disability has resulted from the injury and whether or not it is stationary,” and, if stationary, “a description of the disability with a complete evaluation”;
• apportionment of disability, if any; for psychiatric claims, the percentage of causation from actual events of employment; the reasons for the opinion; and the doctor’s signature.

Two more requirements sit on top of that list. Labor Code section 4663 requires the doctor to address apportionment in any report on permanent disability, discussed below. And for injuries on or after January 1, 2013, the physician also completes the DWC “Physician’s Return-to-Work & Voucher Report” (form DWC-AD 10133.36), which tells the claims administrator you are permanent and stationary, lists your restrictions and starts the voucher clock. You have a right to a copy of the P&S report. Ask for it the day you learn it exists; the deadlines below run from the date the report is received.

What stops and what continues when you reach MMI

The timeline from injury to award, and where MMI sits in it

Real cases are less tidy. A worker can be MMI for one body part while still treating for another, a QME can send you back to treatment, and an unexpected surgery can reopen temporary disability.

How the P&S report becomes a permanent disability rating

For injuries on or after January 1, 2013, Labor Code section 4660.1 requires the physician to describe and measure your impairment using the AMA Guides to the Evaluation of Permanent Impairment, 5th Edition, producing a whole person impairment (WPI) percentage. That WPI is multiplied by an adjustment factor of 1.4, then adjusted for your occupation and your age at the time of injury to produce the final permanent disability percentage. Section 4660.1(c) provides that impairment for sleep dysfunction, sexual dysfunction or psychiatric disorder arising out of a compensable physical injury does not increase the rating, with exceptions for violent acts and catastrophic injuries. The permanent disability benefit itself, how it is paid and how long it lasts, has its own page.

Summary rating for unrepresented workers

If you do not have an attorney, Labor Code section 4061 routes the report to the DWC Disability Evaluation Unit. After a QME report, the administrative director must calculate the rating within 20 days of receipt and serve it on both sides (section 4061(e)); a rating involving possible apportionment goes first to a workers’ compensation judge (section 4061(f)). Either party may request reconsideration in writing within 30 days of receipt, stating the reasons (section 4061(g)). Represented workers usually have the report rated by their attorney and by the claims administrator, with a formal DWC rating only if a judge orders one.

The rating is a presumption, not a verdict

Two published Court of Appeal decisions matter here. In Milpitas Unified School District v. Workers’ Compensation Appeals Board (Guzman) (2010, No. H034853), the court held that the entire AMA Guides is part of the rating schedule, so a physician may use clinical judgment, including another chapter, table or method within the Guides, when the standard chapter does not accurately describe the worker’s impairment, if the opinion is supported by substantial evidence. In Ogilvie v. Workers’ Compensation Appeals Board (2011, No. A126344), the court held that a worker may rebut the scheduled rating by showing a factual error in the formula, the omission of medical complications that aggravate the disability, or that the injury has left the worker not amenable to rehabilitation with a greater loss of earning capacity than the schedule reflects. Those cases are why the words in the P&S report matter as much as the number.

Apportionment: the part of the report that shrinks the award

Labor Code section 4663 provides that “apportionment of permanent disability shall be based on causation,” and requires any physician who addresses permanent disability to state “what approximate percentage of the permanent disability was caused by the direct result of injury arising out of and occurring in the course of employment” and what approximate percentage was caused by other factors, including prior injuries. A doctor who cannot do so must say why and consult with or refer you to another physician. You must, on request, disclose prior permanent disabilities or impairments (section 4663(d)). Labor Code section 4664 then limits the employer to “the percentage of permanent disability directly caused by the injury,” conclusively presumes that a prior permanent disability award still exists at the time of a later injury, and caps lifetime awards for any one region of the body at 100 percent unless the disability is conclusively presumed total.

Read the apportionment section for whether the doctor explains how the percentage was chosen rather than asserting it, whether the “other factors” are documented in your records or assumed, and whether prior conditions that never limited your work are being counted anyway. A poorly reasoned apportionment opinion can be challenged with a supplemental report, a deposition of the doctor, or a QME or AME evaluation.

What to do when you disagree with the MMI finding or the P&S report

Disagreement runs in both directions. Workers object because the doctor called them stationary too early, missed a body part, understated restrictions or apportioned generously to age. Insurers object because the doctor rated too high or found too much future care. The tools are the same either way.

1. Read the report first. Check the body parts covered, the WPI for each, the restrictions, the future medical section and the apportionment reasoning against your records.
2. Second and third opinions inside the MPN. If you dispute the diagnosis or the treatment prescribed, Labor Code section 4616.3(c) lets you seek the opinion of another physician in the medical provider network, and a third if you still disagree. When the real problem is a doctor who stopped treating too soon, this is often the fastest route, and a new treating physician can write a new report. Our page on medical treatment in a workers’ compensation claim explains the MPN and utilization review.
3. Object in writing and on time. A dispute about the existence or extent of permanent impairment and limitations, or the need for future medical care, goes to a QME or AME under Labor Code section 4061. For other medical determinations by the treating physician, Labor Code section 4062(a) requires the objecting party to notify the other side in writing within 20 days of receiving the report if the worker is represented, or within 30 days if not, unless extended for good cause or by agreement. Late objections lose disputes before they start.
4. Get the panel. If you are unrepresented, the employer must give you the DWC panel request form; if you do not submit it within 10 days, the claims administrator may (section 4062.1(b)). The DWC Medical Unit issues a randomly generated panel of three QMEs in the specialty requested (8 CCR 30). You then have 10 days to pick one and schedule an appointment, or the employer picks for you (section 4062.1(c)). No one on the employer’s side may discuss your choice with you (8 CCR 31.3).
5. If you are represented. Section 4062.2 applies. Your attorney and the claims administrator may agree on an AME at any time, or either side may request a panel no earlier than 10 days after the objection is mailed. Each side strikes one name within 10 days and the remaining doctor is your QME. A worker who already had an unrepresented QME is not entitled to a new one because a lawyer later appears (section 4062.1(e)), one reason to get advice before the first panel request, not after.
6. Compensability disputes are separate. If the insurer denies that the injury is work related at all, the medical evaluation is obtained under Labor Code section 4060 through the same 4062.1 or 4062.2 procedure. If your claim is denied, start with what to do about a denied workers’ compensation claim.

Been told you are permanent and stationary and not sure the report is right? Call (888) 772-2529, 24/7, before the objection window closes.

Medical treatment after MMI

MMI changes the goal of treatment from cure to maintenance, but it does not end the employer’s duty to provide it. The P&S report should list the future care the doctor expects, such as medication, injections, flare-up therapy or a possible future surgery; that list is the starting point for the future medical component of any settlement and for the treatment you request after a stipulated award. Treatment still runs through the MPN, each request still goes through utilization review, and a denial is still challenged through independent medical review within 30 days. If your condition later worsens, tell the treating physician and ask whether you are still permanent and stationary; a worker can return to temporary status after an unexpected surgery, subject to the 104-week cap.

Work status after MMI: restrictions, the job offer and the $6,000 voucher

The P&S report and the return-to-work form state your permanent restrictions. What the employer does with them decides two benefits.

• The job offer. Labor Code section 4658.1 defines the three kinds. Regular work is your usual job at equivalent pay. Modified work is your regular job changed so that you can perform all of its functions, paying at least 85 percent of your pre-injury wages. Alternative work is a different job you can perform, also paying at least 85 percent. All three must be within a reasonable commuting distance of where you lived when you were hurt.
• The supplemental job displacement voucher. Under Labor Code section 4658.7, for injuries on or after January 1, 2013, if the injury causes permanent partial disability you are entitled to a voucher of up to $6,000 for retraining and related expenses unless the employer offers regular, modified or alternative work lasting at least 12 months “no later than 60 days after receipt by the claims administrator of the first report” from the treating physician, an AME or a QME, on the administrative director’s form, finding that your disability is permanent and stationary and has caused permanent partial disability. If no qualifying offer is made, the claims administrator must furnish the voucher within 20 calendar days after the offer period expires (8 CCR 10133.31). The voucher expires two years after it is furnished or five years after the date of injury, whichever is later, and cannot be settled or commuted for cash. Voucher recipients may also apply to the state’s Return-to-Work Supplement Program for a separate one-time payment.
• Effect on PD advances. Section 4650(b)(2) lets the insurer hold PD advances before an award if the employer has offered a position paying at least 85 percent of your pre-injury wages, or you are working at 100 percent. When the award issues, the amount due is calculated back to the earlier of the last TD payment or the P&S date.

Older articles still mention a 15 percent increase or decrease in permanent disability tied to a job offer within 60 days of P&S status. That rule, in Labor Code section 4658(d), applies only to injuries from 2005 through 2012; section 4658(e), governing injuries on or after January 1, 2013, has no such adjustment.

How MMI changes the settlement conversation

Before MMI there is nothing to value. After it there is a rating, a future medical estimate and a work status, and an offer can be checked against arithmetic. That arithmetic, the conversion of a rating into weeks and dollars, and the difference between a Compromise and Release and Stipulations with Request for Award are set out on our California workers’ comp settlement chart. Three timing points are specific to MMI. PD advances paid after MMI are credited against the eventual award, so the lump sum at the end is the gross figure minus what was already paid. If a QME or AME evaluation is pending, most experienced parties wait for it, because the medical-legal report, not the treating doctor’s report, is usually the number the case settles on. And an early offer that arrives with or just after the P&S report, before any rating or dispute, deserves suspicion; the insurer has read the report and you may not have. If you receive or expect Social Security Disability Insurance, the structure of a workers’ compensation settlement can change the SSDI offset; the firm handles Social Security disability claims in house and coordinates the two.

Mistakes to avoid after a P&S report

• Not getting the report. You are entitled to a copy, and every deadline on this page runs from its receipt.
• Missing the objection window. Twenty days represented, thirty days unrepresented, under section 4062(a). An unchallenged treating physician’s determination tends to become the case.
• Using the QME panel without advice. The specialty requested, the doctor picked and the records that reach the evaluator shape the result, and an unrepresented worker who later hires a lawyer generally does not get a second panel.
• Treating MMI as “done.” Skipping appointments or dropping out of the MPN after MMI makes it harder to prove future medical needs and easier for the insurer to argue the condition resolved.
• Mishandling the job offer. Refusing a qualifying offer can cost the voucher and affect PD advances; accepting a job you physically cannot do can hurt your health and your case. Both deserve a conversation with the doctor and a lawyer.
• Settling on the treating doctor’s number without checking it. The WPI, the occupational and age adjustments and the apportionment are all checkable, and section 4061(d) gives each side 30 days after receiving a QME report to request one supplemental report correcting factual errors.

Cómo puede ayudarte Abdi & Associates

Abdi & Associates, Inc. handles California workers’ compensation claims in house for injured workers throughout the state, with consultations by phone or video. When you call about an MMI finding or a P&S report, the consultation covers what the report says about impairment, restrictions, future care and apportionment; whether the objection period is still open and which procedure applies to you; whether a QME panel or an AME makes sense and in what specialty; whether temporary disability was paid in full and permanent disability advances started on time; and whether the employer’s job offer, if any, meets the statutory definitions. The usual next steps are gathering the reports and benefit notices, serving a timely objection where one is needed, managing the medical-legal evaluation, obtaining a correct rating, and then negotiating or setting the case for hearing. Attorney fees in workers’ compensation are set and approved by a workers’ compensation judge and paid from the award; our page on what a workers’ comp lawyer costs in California explains the percentages judges approve. No attorney fee unless there is a recovery. If you are at the beginning of the process rather than the end, our workers’ compensation overview covers the claim from the first report of injury forward.

Preguntas frecuentes

What does permanent and stationary mean in workers’ comp?

It means your doctor has decided your condition has reached maximal medical improvement: it is well stabilized and unlikely to change substantially in the next year, with or without treatment (Cal. Code Regs., tit. 8, section 10152). It is a judgment about stability, not a statement that you are recovered or that your claim is finished.

What happens after MMI in workers’ comp?

Temporary disability stops, and if the report finds permanent impairment the first permanent disability payment is due within 14 days after the last TD payment. The report is rated, the employer has 60 days to offer regular, modified or alternative work or owe the $6,000 voucher, either side may object and obtain a QME or AME evaluation, and medical treatment continues. Once the rating is established, the case moves to settlement, a stipulated award or trial.

Does workers’ comp stop paying when you reach MMI?

Temporary disability stops, but the claim does not. Permanent disability payments begin if the report finds lasting impairment, medical care continues, and the voucher may become due. If no permanent impairment is found, the insurer must send a notice saying no permanent disability will be paid and why, and you can dispute that finding.

What is in a P&S report?

Under Cal. Code Regs., tit. 8, section 10682, the report should cover the history and complaints, the records reviewed, examination findings and diagnosis, the nature and extent of disability and work limitations, causation, past and future treatment, whether the disability is permanent and stationary with a complete evaluation, apportionment, and the reasons for the opinions. For injuries since 2013 the physician also completes the return-to-work and voucher form.

Can I still get medical treatment after MMI?

Yes. The employer remains responsible for reasonable care through the medical provider network, subject to utilization review. Future medical care stays open after a stipulated award and closes only if you settle it by Compromise and Release.

How long do I have to object to a P&S report?

For medical determinations by the treating physician under Labor Code section 4062(a), written objection is due within 20 days of receiving the report if you have an attorney and within 30 days if you do not, unless extended for good cause or by agreement. Disputes about permanent impairment and future medical care go to a QME or AME under section 4061; a panel can be requested no earlier than 10 days after an objection is mailed.

Can I disagree with my doctor saying I am permanent and stationary?

Yes. You can seek a second and third opinion within the MPN on diagnosis or treatment (Labor Code section 4616.3), object to the report and request a QME panel, or, if represented, agree with the insurer on an AME. A QME or AME can find that you are not yet permanent and stationary and need further treatment.

Do I have to go back to work after MMI?

If your employer offers regular, modified or alternative work within your permanent restrictions and within the definitions in Labor Code section 4658.1, refusing it can cost you the voucher and can allow the insurer to hold permanent disability advances before an award. If the offered job exceeds your restrictions, tell the doctor and get advice before accepting or refusing.

How soon after MMI does workers’ comp settle?

There is no fixed period. An accepted injury with no medical dispute can resolve within a few months of the rating. A case that goes to a QME or AME usually waits for that report, which can take several months once the appointment and report time frames are counted. A serious offer normally follows the medical-legal report, not the initial P&S report.

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• Ponte en contacto con Abdi & Associates

Just told you are MMI or permanent and stationary? Call (888) 772-2529, 24/7, in English or Spanish, for a free consultation, or use the form below. No attorney fee unless there is a recovery.

Primary sources: Cal. Code Regs., tit. 8, §§ 30, 31.3, 38, 10133.31, 10152, 10682; Cal. Lab. Code §§ 4060, 4061, 4062, 4062.1, 4062.2, 4616.3, 4650, 4656, 4658, 4658.1, 4658.7, 4660.1, 4663, 4664; Milpitas Unified School District v. Workers’ Compensation Appeals Board (Guzman) (2010) Cal. Ct. App., Sixth Dist., No. H034853; Ogilvie v. Workers’ Compensation Appeals Board (2011) Cal. Ct. App., First Dist., No. A126344; California Division of Workers’ Compensation, “Permanent disability benefits”; DWC, “Answers to frequently asked questions about qualified medical evaluators (QMEs) for injured workers”; Workers’ Compensation in California: A Guidebook for Injured Workers, chapter 7; DWC form DWC-AD 10133.36.

Reviewed by Shawn Abdi, Esq., Abdi & Associates, Inc. Published: September 9, 2026. Attorney advertising. This page is general information, not legal advice about your specific situation. Legal deadlines have exceptions; confirm yours with an attorney. Past results do not guarantee future outcomes.