Não é mencionado no filme, mas no romance original aprendemos que ele trabalha para o Departamento para o Regulamento e Controle de Criaturas Mágicas .
Mr Weasley was shaking hands with a ruddy-faced wizard with a scrubby brown beard, who was holding a mouldy-looking old boot in his other hand.
‘This is Amos Diggory, everyone,’ said Mr Weasley. ‘Works for the Department for the Regulation and Control of Magical Creatures. And I think you know his son, Cedric?’
Harry Potter and the Goblet of Fire