Police and ambulance services were called to the Stratford-upon-Avon crane hirer’s depot last week after the man was understood to have been hit by a falling pipe.
The 49-year-old Bedford man was rushed to Coventry University Hospital but died later from his injuries.
Detective Inspector Liam Barry said “We are working closely with the company and the health and safety executive, to investigate this matter.
“Our thoughts are with the man’s family at this sad and difficult time.”