Kernrechtsfrage
Whether the reduction of the disability pension from a full to a half pension from 1 April 2004 was lawful.
Extrahierter Entscheid
The revision was lawful because the decisive temporary basis for the earlier full pension no longer existed and no relevant worsening beyond the already recognized partial disability was shown.
Extrahierte Begründung
The court held that the earlier full pension had been granted mainly because of substance dependence and an expected detoxification period. Later reports did not establish a relevant change in invalidating health conditions after the relevant date; any remaining complaints did not justify a full pension.