The Health and Safety Executive (HSE) is urging employers in Leeds to make the safety of their staff a priority in the new year.
The plea comes after figures released by the organisation showed there were three work-related deaths in the city in 2009/10, one more than 2008/09.
The total number of people injured dropped in 2009/10 from 455 to 411.
The HSE said employers should not be complacent and ensure appropriate safety measures were in place.
David Snowball, regional director for HSE in Yorkshire and Humber said: "Each death means a family missing a loved one at Christmas.
"Straightforward health and safety measures save lives - sometimes it really is as simple as that.
"There are all sorts of resolutions employers might make in January, but reinforcing their commitment to looking after their employees is a good place to start."