Private offices and other establishments can no longer have designated rooms for puffing cigarettes. The ban also includes hotels and restaurants.
According to Health Minister Anbumani Ramadoss, smokers will have to step outside into open space if they wish to smoke.
Though in the beginning, the fine would be only Rs 200, the government is trying to amend the act and in future the fine may go up to Rs 1,000.
Even the employer can be fined if somebody is found smoking within the office premises.