Kelum faces an ethical dilemma when his new company's HR manager asks him to disclose confidential client information from his previous job. To resolve this, Kelum uses three approaches:
1. Informal tests with a friend suggest disclosing the information would be unethical.
2. Applying Kallman and Grillo's four step model, Kelum analyzes the situation through consequentialism, rights/duties, and Kant's categorical imperative. This determines disclosing information would harm his previous employer.
3. After comprehensive analysis, Kelum decides not to disclose the confidential information to protect his previous employer's rights and treat them respectfully, fulfilling his duties as a loyal employee.