EMPLOYMENT RELATIONSHIP
Scrooge was apprenticed to Fezziwig, indicating an employment relationship.
SCROOGE
The Ghost stopped at a certain warehouse door, and asked Scrooge if he knew it. 'Know it!' said Scrooge. 'Was I apprenticed here?' ... 'Why, it's old Fezziwig! Bless his heart, it's Fezziwig alive again!'