Final answer:
The ethical dilemma faced by Sunnia Wong in the case study affects the customer, as a direct victim of potential deception; Sunnia Wong herself, who grapples with ethical conduct against management pressure; and the employer, whose reputation and legal standing could be compromised.
Step-by-step explanation:
In Sunnia Wong's ethical dilemma, three stakeholders are significantly affected. The first and most obvious is the customer, who is directly victimized by potentially dishonest corporate practices and faces monetary and personal harm if the prepaid vouchers turn out to be part of a deceitful act. Secondly, the employee, represented by Sunnia Wong, who faces an ethical conflict between obeying management instructions and acting on her moral convictions, risking her job and professional reputation. Thirdly, the employer can suffer long-term reputational damage, potential legal consequences, and erosion of trust with customers and employees which could affect the long-term health of the business. This situation echoes broader debates about whether the legal rights of a corporation imply moral responsibilities towards various parties and whether these entities owe a duty to prioritize the interests of shareholders or to balance the interests of all stakeholders affected by their operations.