Questione giuridica chiave
Whether a revision ground existed because the economic impact of the unchanged health condition had changed.
Decisione estratta
Yes. The insured's ongoing part-time employment created a relevant change in earning effects, even though her health status remained essentially unchanged.
Motivazione estratta
For revision, a change in one of the comparison incomes is sufficient. The insured had taken up durable, remunerated work, which justified re-assessing the invalidity degree.