A 29-year-old man fell five storeys after attempting to free himself from a lift.
Dumfries & Galloway Housing Partnership Limited was fined £8,000.
Muller UK and Ireland pleaded guilty to breaching health and safety regulations at Manchester Crown Court.
The airline failed to properly risk-assess workers for exposure to vibrations from hand-held tools.
A hazardous waste disposal company based in Essex has been prosecuted by the HSE following a workplace incident in which a worker suffered serious crush injuries.