In addition, employers must pay workers the minimum wage set by Federal law. If a dock in pay dropped a person's wages below that level, it would be illegal. Generally, yes, depending on state and local law. Employers are free to restrict smoking in the officeplace. They can ban it outright or restrict it to designated areas.
Some employers forbid smoking anywhere in the office.
While an employer can restrict smoking in the workplace, some states have laws that protect smokers from discrimination. That means that an employer can't reject an applicant because he or she is a smoker. In some states, such as Georgia, however, an employer can reject smokers and insist that they refrain from lighting up on and off the job. That policy may be difficult to enforce, but it's legal so long as workers are adequately informed when they take the job. Many federal and state laws have been passed to protect workers.