A Social Security claimant may improve after a period of serious limitations. In Wilks v. Commissioner of Social Security, decided October 16, 2026, a California federal court held that the agency still had to consider whether the claimant was disabled for a closed period before that improvement.
Later improvement did not answer the whole claim
Barbara Jean Wilks alleged disability beginning in June 2020. The ALJ found severe right-knee arthroplasty, obesity, and left-hip arthritis, but concluded that she could perform medium work with additional restrictions.
The ALJ gave more weight to later examinations than to opinions from 2022 that described greater lifting limits. Those later examinations showed findings such as normal strength, tone, gait, and range of motion. The ALJ also discounted the extent of Wilks’s reported pain and physical dysfunction based on limited or conservative treatment, medication effectiveness, examination findings, and daily activities.
The missing issue was a closed period
The district court found that the ALJ adequately explained the treatment of the individual medical opinions and symptom allegations. But the same record could suggest that Wilks’s condition improved over time. The ALJ did not explain whether the earlier evidence established disability for at least twelve months before that improvement.
That gap mattered because Social Security law can recognize a closed period: a past span when a person met the disability standard even though the person later improved. The court granted Wilks’s motion, denied the Commissioner’s cross-motion, and sent the case back under sentence four of 42 U.S.C. § 405(g) for the agency to decide that issue.
Build the record as a timeline
A disability record should connect dates to function. Helpful evidence may show when symptoms began, what a person could lift or how long the person could sit, stand, or walk, what treatment occurred, and when clinical findings or daily functioning changed. Later improvement does not by itself resolve whether an earlier period satisfied the disability rules.
This district-court decision was limited to its record. The remand did not award benefits, and the court did not decide that Wilks was disabled during any period. The agency must address the closed-period question in further proceedings.
Source: Wilks v. Commissioner of Social Security, 2026 U.S. Dist. LEXIS 237290 (E.D. Cal. Oct. 16, 2026).
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