Key legal question
Whether the 20% accident insurance pension could be revoked under Art. 17 ATSG due to a relevant change in disability
Extracted holding
No relevant change in the insured person's health or earning capacity was proven between 1996 and 2009.
Extracted reasoning
The medical reports showed no substantial improvement in work capacity; if anything, the permanent impairment worsened. The limitations in adapted work remained essentially unchanged at 20%.