Workplace smoking laws apply all enclosed facilities within places of employment.
Smoking shall be prohibited in all enclosed facilities within places of employment, and required signs must be posted. An employer may designate an outdoor smoking area.
In Rhode Island, smoking areas must be physically separate from enclosed workspace to prevent smoke from getting into the workplace.
Rhode Island doesn’t specifically require employers to provide workplace accommodations for nonsmoker employees.
Rhode Island employers must communicate their smoking policy to all employees and all applicants for employment.
An employer may not prohibit the use of tobacco outside of work and cannot discriminate in compensation, terms, or benefits for tobacco use outside of work or retaliate against an employee for reporting or attempting to prosecute a violation of the law.
If you want to go right to the source and look up Rhode Island law on workplace smoking laws -- or if you're writing a letter to your employer or employee and want to cite the applicable law -- the relevant statute(s) can be found at R.I. Gen. Laws Sections 23-20.10-1 to 23-20.10-14. Workplace smoking information is also available in Nolo's books Your Rights in the Workplace, by Barbara Repa (Nolo) and The Employer's Legal Handbook, by Fred Steingold (Nolo).