Hammond is a kind of respected man. He offered Gretta a job as pianist at the second floor of the Sorciere Restaurant, making it her first paid job as a pianist. After the interruption of the Kreuzen Provincial Army in Trails of Cold Steel, he offer free dessert to everyone as compensation for the interruption.
As a supervisor Hammond is rather strict. He's been supervising his apprentice Calmin since S.1199 and finally promotes him to chef at the beginning of Trails of Cold Steel II.