Ethics in international business means that businesses make daily decisions, conduct operations, and respect the rights of people, groups, and society. These can include treating employees fairly and respecting diversity in cultures, as well as avoiding unethical practices, such as bribery, corruption or exploitation of others. The company must also have clear guidelines on what ethical conduct is and the consequences for not adhering to those standards.
It is ultimately the top executives of an organization who define ethical business practices, both within their own company and across the cultures they operate in. They must also be knowledgeable about local laws and regulations in addition to international standards for human rights protection, working conditions, the environment, etc. This will allow them to ensure their policies work wherever they are. The company should also communicate these concerns to all employees, at every level of the business. This will help everyone in the organization understand what is expected.