A growing number of workers in the United States are employed in small businesses. This study describes the experiences of small work sites in implementing policies restricting smoking. In the fall of 1987, we surveyed by telephone 216 work sites employing 120 or fewer persons. Compared with companies without policies, companies with policies were larger and reported having fewer smokers and more management support for smoking policies. Seventy-three percent of work sites without a smoking policy said they would be very likely to implement a policy if it were required by law; 42% of work sites with a policy reported offering smoking cessation assistance to their employees. Overall satisfaction and compliance with the smoking policy was high among work sites with a policy. The findings of this study have key implications for other small businesses considering implementing a smoking policy.