Questão jurídica principal
Whether the revision of the full invalidity pension to a quarter pension as of 1 September 2000 was lawful.
Decisão extraída
The revision was lawful; the reduction to a quarter pension was upheld.
Fundamentação extraída
The court accepted the factual findings on health and work capacity, endorsed the use of a 10% wage deduction from statistical earnings, and held that this was not a legally erroneous exercise of discretion.