According to the school of ethical universalism,

the most universally recognized basis for judging the "ethical correctness" of the actions and behavior of businesspeople is the Code of Ethical and Moral Behavior adopted and advocated by the United Nations.

concepts of right and wrong are universal within countries but not across countries and cultures.

only those ethical principles that are widely recognized and agreed$-$upon worldwide can be used to put valid ethical boundaries on how business activities are conducted.

the standards of what is ethically right and ethically wrong are absolute and, as a consequence, can be used to judge the

"ethical correctness" of the behavior of all people and all organizations in all countries and in all circumstances.

the most fundamental concepts of what is right and what is wrong are universal and transcend most all cultures, societies, and religions$--$hence, it is entirely appropriate to expect all members of society $($including all personnel of all companies worldwide$)$ to conform to universal ethical standards.