Continuity mistake: After Hook swims away, Wendy asks Peter where are they going to. The rope behind her swaps positions between shots.
Continuity mistake: Peter cuts Hook's hat and feather. When Hook swims away, Peter grabs the hat to impersonate Hook and the hat is fixed.
Deliberate mistake: When the kids are in the crow's nest fighting the pirates, dozens of stones and arrows fly out of nowhere, despite the kids just having a handful. Check for the kid with the blowpipe: He manages to blow dozens of rocks out of nowhere. There's even a shot where arrows and stones are flying from all over the place despite the fact that a shot later the kids are crouching.
Continuity mistake: When Nana is sent outside and holds the rope, the length of the short end increases between shots.
Continuity mistake: When Mr. Darling is getting dressed, a jar of water suddenly appears no the night table behind him.
Continuity mistake: When the movie begins and Mrs. Darling grabs a hairpin, a bottle on the table disappears between shots.
Answer: In the original stage play by J.M. Barrie, he was a bank clerk. I don't think what he did for work was brought up in the 1953 film.
Bishop73