The Health and Safety Authority (HSA) has accused the Vintners' Federation of misrepresenting the conclusions of its report on the health effects of passive smoking in the workplace.
The report, which was published by the HSA and the Office of Tobacco Control earlier this year, shows environmental tobacco smoke contains 50 known carcinogens and causes cancer, heart disease and respiratory problems.
The report also says passive smoking has adverse effects on pregnant women and causes low birth weight in babies. It found the current range of air conditioning technologies is ineffective at removing smoke.
Chief executive of the HSA, Mr Tom Beegan said it is "highly irresponsible" of the Vintners' Federation to claim that further research is required before action can be taken to protect the health of those exposed to passive smoking.
Mr Beegan said he was confident that the amendment of current regulations on carcinogens to include passive smoking will ban smoking in enclosed workplaces.
The HSA urged the public to attend one of its information meetings being held around the country in June.