The BHF found almost a third (31%) of people working in the accommodation and food services sector are smokers.
In second place was water supply, sewerage, waste management and remediation (29%), followed by construction (28%).
The least likely industries for smokers to work in were education (11%) and professional, scientific and technical activities (13%).
Overall the UK workforce smokes 74 million cigarettes a day, suggesting the average smoker has 12 cigarettes a day.
BHF project manager for the Health at Work programme Lisa Young said: “No matter what industry you work in, smoking is extremely damaging to your heart health and the health of your business.
“But this research shows there is still a shocking divide between blue and white collar professions when it comes to how many of us are taking up this deadly addiction.
“Good health is good business," she added. "That’s why we want all UK employers to help us tackle these inequalities head on, by helping their workers kick the habit for good.”
Industries with the most smokers
- Accommodation and food service activities (31%)
- Water supply, sewerage, waste management and remediation (29%)
- Construction (28%)
- Administrative and support service activities (27%)
- Transport and storage (24%)
- Manufacturing (23%)
- Wholesale and retail trade, repair of motor vehicles (23%)
- Agriculture, forestry and fishing (19%)
- Other service activities (19%)
- Mining and quarrying (19%)