Final answer:
Maximum Medical Improvement (MMI) is not a joint employer-physician decision about job performance but is the point where no further medical improvement is expected, as determined by a physician.
Step-by-step explanation:
Maximum Medical Improvement (MMI) is not a joint decision by the employer and the worker's physician that the worker can no longer effectively perform her job. MMI is defined as the point at which a doctor determines a worker has reached a state where his or her condition cannot be further improved with medical treatment, also known as 'quiescence'. The doctor's declaration of MMI is typically the event that triggers the evaluation of any permanent impairment and associated benefits. The time frame of 500 weeks is not universally applied to MMI and can vary depending on jurisdiction and specific cases. It is incorrect to define MMI by a set period like 500 weeks, as it is entirely dependent on individual medical circumstances and evaluations.
Maximum Medical Improvement (MMI) is the term used by workers' comp insurers to describe the point after which an injured worker isn't likely to get any better. In some cases, the worker is declared to have reached MMI because they've made a full recovery.