Government department head: We already have a code of ethics that companies doing business with the department are urged to abide by  The fact that virtually all of the companies have agreed to abide by it indicates that it is successful
Ttherefore, neither stronger ethics regulations nor enforcement mechanisms are necessary to ensure ethical behavior by companies doing business with the department
A study of codes of ethics for companies found that the codes are most effective when the top executives of companies that agree to abide by them are fully committed to following them.