In this guide9 sections
In California workers’ comp, “permanent and stationary” (P&S) and “maximum medical improvement” (MMI) mean the same thing: your condition has stabilized and isn’t expected to change substantially in the next year, with or without treatment. P&S is the term California’s workers’ comp rules and forms use, while MMI comes from the AMA Guides and is common elsewhere. Either way, reaching it is a turning point: temporary disability usually ends, and your claim moves to rating any permanent disability.
Key takeaways
- California regulations define permanent and stationary status as the point when you have reached maximal medical improvement (8 CCR §9785(a)(8)).
- P&S doesn’t mean you’re healed, that all treatment stops or that you must return to your old job.
- Your treating doctor’s P&S report drives your permanent disability rating, your right to future medical care and your eligibility for a $6,000 retraining voucher.
- When TD ends, permanent disability advances are generally due within 14 days of the last TD payment (Labor Code §4650(b)).
- If you disagree with the report, you can object and get an evaluation from a qualified or agreed medical evaluator, but strict deadlines apply.
P&S and MMI: the same point, two names
| Permanent and stationary (P&S) | Maximum medical improvement (MMI) | |
|---|---|---|
| Where you’ll see it | California workers’ comp reports, forms and claims letters | The AMA Guides, other states’ systems and federal programs |
| Meaning in California | Your condition is well stabilized and unlikely to change substantially in the next year | The same; California’s regulation defines P&S as reaching maximal medical improvement |
| What it triggers | End of temporary disability; permanent disability rating; future medical findings; retraining voucher timeline | The same events, when used in a California claim |
The definition in the DWC’s medical reporting rules, 8 CCR §9785, applies whether your doctor writes “P&S” or “MMI.” For a closer look at what follows MMI, see maximum medical improvement in California workers’ comp.
What P&S does and doesn’t mean
Being declared P&S means your doctor doesn’t expect significant improvement or decline over the next year. It does not mean:
- You’re fully recovered. Many workers reach P&S with lasting pain, weakness or restrictions. That is exactly what permanent disability pays for.
- All treatment ends. The report should say whether you need future medical care, such as medication, injections, therapy or even future surgery.
- You must go back to your old job. Your restrictions decide what work you can do, and your employer’s response to those restrictions matters for retraining benefits and for disability accommodation.
What goes into the P&S report
Under 8 CCR §9785, your primary treating physician must report on the existence and extent of any permanent impairment and work limitations and on any need for continuing or future medical care, generally within 20 days of the examination. For current injuries, impairment is described using the AMA Guides, Fifth Edition, often on the DWC’s PR-4 form. A typical report covers:
- Your diagnosis, history and current symptoms
- Whole person impairment (WPI) for each injured body part
- Permanent work restrictions
- Future medical care
- Apportionment, meaning how much of the disability the doctor attributes to the work injury versus other factors
If you’re P&S for all conditions and have permanent partial disability, the doctor must also complete the Physician’s Return-to-Work & Voucher Report (form DWC-AD 10133.36), which describes your work capacities for the employer’s job-offer decision.
Read the report carefully. Missing body parts, an understated WPI or a vague future medical section can cost you money for years.
What changes when you become P&S
- Temporary disability usually stops. With the last TD payment, the claims administrator must send a notice saying whether permanent disability is payable and how much, or that it can’t be determined yet (Labor Code §4061(a)).
- Permanent disability advances begin. Under Labor Code §4650(b), PD payments are generally due within 14 days after the last TD payment, based on a reasonable estimate until your rating is final. See how TD and PD benefits differ.
- Your rating is calculated. For injuries on or after January 1, 2013, WPI is multiplied by 1.4 and adjusted for your occupation and age (Labor Code §4660.1). See how permanent disability ratings work.
- The retraining voucher clock starts. For injuries on or after January 1, 2013, if your employer doesn’t offer qualifying regular, modified or alternative work within 60 days after the claims administrator receives the P&S report, you’re entitled to a supplemental job displacement voucher worth up to $6,000 (Labor Code §4658.7). Voucher recipients may also qualify for a one-time $5,000 Return-to-Work Supplement.
- Settlement becomes possible. With a rating and future medical findings, the case can be valued and settled.
Hypothetical example: Ana stocks shelves at a grocery store and has shoulder surgery after a lifting injury. Ten months later her treating doctor finds her P&S with permanent overhead-lifting restrictions and a need for future injections. Her TD stops, and the insurer’s notice with her last TD check says PD will be advanced. Ana thinks the report leaves out her neck, which has hurt since the injury. Because she disagrees with the impairment findings, she can object and get an evaluation from a qualified medical evaluator before her rating is finalized.
If you disagree with the P&S findings
Disputes over the existence or extent of permanent impairment, or the need for future medical care, are resolved under Labor Code §4061 through a medical-legal evaluation:
- If you have a lawyer, the evaluation is obtained under Labor Code §4062.2, through an agreed medical evaluator (AME) or a panel qualified medical evaluator (QME).
- If you don’t have a lawyer, your employer must promptly give you a form to request a panel of three QMEs, and the evaluation is obtained under Labor Code §4062.1. The DWC then calculates a rating within 20 days of receiving the evaluation, and you can ask for reconsideration within 30 days of receiving the rating.
- For other medical determinations by your treating doctor, Labor Code §4062(a) requires a written objection within 20 days of receiving the report if you have a lawyer, or 30 days if you don’t.
- Treatment denials are different. If utilization review denies or modifies treatment your doctor requests, the dispute goes to independent medical review, not a QME (Labor Code §4062(b)).
Compare evaluators in the difference between a QME and an AME.
Steps to take when you’re declared P&S
- Get a copy of the full report, not just the claims letter summarizing it.
- Check it line by line: every injured body part, your restrictions, the WPI numbers and future medical care.
- Calendar your deadlines to object, request a QME panel or ask for reconsideration.
- Watch your checks. PD advances should start within 14 days of the last TD payment.
- Track any job offer and whether it fits your restrictions, because it affects the retraining voucher.
- Don’t settle before the numbers are checked. A settlement can close future medical care.
Frequently asked questions
Are P&S and MMI the same thing in California?
Yes. California’s workers’ comp regulation defines permanent and stationary status as the point when you have reached maximal medical improvement, so the terms describe the same stage of your claim.
Does being P&S mean my medical treatment stops?
No. If the report finds you need future medical care, you can keep receiving reasonable treatment for the injury. Treatment requests still go through utilization review.
Can I go back on temporary disability after P&S?
Sometimes. If your condition gets worse and your doctor takes you off work again, TD may restart if you have TD weeks left. A claim for new and further disability generally must be filed within five years of the date of injury (Labor Code §5410).
How long does it take to reach P&S?
There is no set timeline. It depends on the injury and treatment, such as whether you need surgery. Temporary disability for injuries on or after 2008 is generally capped at 104 weeks within five years of the injury, whether or not you have reached P&S.
Can my employer fire me once I’m P&S with permanent restrictions?
Your employer can’t fire you because you filed a workers’ comp claim, and under the Fair Employment and Housing Act it generally must engage in the interactive process and consider reasonable accommodation for a disability. See permanent work restrictions in workers’ comp cases.
Talk to a California workers’ comp lawyer
Employees First Labor Law represents workers exclusively, including injured workers in California workers’ comp cases. We offer free virtual consultations to review your P&S report, your rating and your next deadlines. Contact us online or call (310) 853-3461.
This article is general information about California law as of 2026, not legal advice for your situation. Reading it does not create an attorney-client relationship.
