A 22-year-old from Stanley Common who was due to become a dad for the first time has been named by police as Will Page.
Mr Page died when a metal parking barrier swung into the windscreen of his van at an industrial unit in Digby Street in Ilkeston.
Flowers and messages of condolence have been left at the scene.
Almost £2,000 has been raised through a fund-raising page set up to pay for his funeral.
The Health and Safety Executive is investigating.