Host farmer George Gittus displayed 41 hi vis jackets on a line, representing those who have died in farm accidents since April last year.
The jackets were on show at Symonds Farm near Bury St Edmunds as more than 100 farmers prepared to find out more on essential health and safety topics.
Mr Gittus told attendees: “Since April last year until today, 41people - whether they be your colleagues, a member of the public, or a child - have not returned home to their family because they have been killed on farms.
“When my team were putting these jackets up yesterday, it sent a few shivers down their spines.”
Hundreds of farmers have attended the NFU East-organised health and safety morning workshops, with 11 held across the region in June and July.
They have covered areas including quad bike and ATV safety, emergency first aid, vehicle and driving licence rules and regulations, tyre safety and lone working.
Representatives from the fire and rescue service and the police have attended many of the events.
NFU East Regional Policy Manager Charles Hesketh said: “Farming remains a dangerous industry and it’s vital we do everything we can to change the industry’s poor safety record.
“These annual events are an effective and impactful way to highlight safer ways of working.”