Key legal question
Whether the insured person's residual work capacity remained economically exploitable on the balanced labor market for purposes of pension revision.
Extracted holding
Although medically assessed at 50% functional capacity, the claimant could only work under extremely restrictive protected conditions that the current labor market no longer offers; the residual capacity was therefore not economically exploitable.
Extracted reasoning
The Court distinguished mere medical capacity from economic exploitability and found that the claimant's severe personality disorder required an isolated, self-created, stress-free environment. Given the modern labor market's demands, no realistic job could be expected.