Under the law:
In general, most places of employment must be smoke-free.
Smoking is not allowed inside most public places, including restaurants, bars, gaming facilities such as bingo halls, bowling alleys, theaters, taxi cabs, schools, and child day care and health care facilities, among others.
The 15 foot radius of business entryways must be smoke-free (unless defined differently by a local law).
Cigar-tobacco bars and the retail floor plan of casinos are exempted from having to be smoke-free.
Employers with three or fewer employees/volunteers that do not allow public access are exempted from having to be smoke-free.
Businesses are not required to post no smoking signs. However, it is recommended to increase compliance with the law.