Some Mothers Do 'Ave 'Em - Season 1 Episode 7
The Employment Exchange

When the new employment exchange manager Bradshaw insists that everyone can be helped, veteran Hooper gladly passes on the hopeless case of Frank Spencer. Both his serial disaster-record and qualification (25 meter breaststroke, after attending many schools, till age 11, no actual classes) support Hoopers point amply. Yet Frank acts indignant, and Bradshaw insists on trying - betting hell keep a job for a week. The only way to win is to employ Frank himself, but this proves far more costly and dangerous for everyone and everything.