Rosemary Miles of Chester Avenue, Lancing, has collected more than 1,800 signatures so far on a petition to have the matter debated in parliament.
Her husband, Mike, died when he fell from the back of a lorry while loading food onto an aircraft last year, hitting his head on the tarmac.
Mrs Miles launched a campaign to try to prevent future deaths in the workplace.
She spoke about her campaign on BBC Radio Sussex last week, and described how she felt after the accident.
“When this happened the fact that the only part of his body that was damaged was his head, I just got this searing anger to think that it could have been prevented by an adequate safety helmet,” she said.
Anyone wishing to add their names to the petition or find out more about the campaign should visit the petition website at you.38degrees.org.uk/petitions/mandatory-head-protection-for-loaders