This presentation provides a comprehensive overview of ethics in negotiation, emphasizing the importance of ethical behavior in achieving successful outcomes. It defines ethics and negotiation, highlighting the significance of trust, relationships, fairness, honesty, and openness. The presentation also addresses unethical behaviors and contrasts them with good negotiation ethics, such as honesty, transparency, and respect. Factors affecting negotiation ethics, including past experiences, incentives, and cultural norms, are examined, along with strategies for promoting trust, such as building mutual benevolence and demonstrating trustworthiness. Furthermore, the presentation explores motivations for unethical conduct and factors influencing a negotiator's ethical behavior, including demographic factors, personality differences, and moral development. Four approaches to ethical reasoning—end-result ethics, duty ethics, social contract ethics, and personality ethics—are discussed, as well as the consequences of unethical conduct, such as declining trust and negative impacts on relationships and organizational reputation. Finally, the presentation offers strategies for dealing with deception in negotiation and concludes that being an ethical negotiator requires honesty and trustworthiness to achieve the best outcomes.