Mobile Expert at T$-$Mobile is a key frontline employee responsible for delivering personalized customer service, selling mobile devices and service plans, and achieving sales goals in a dynamic retail environment. The job requires a combination of product expertise, strong communication skills, and the ability to build rapport with customers to meet their needs effectively. A compensation plan for this role that aligns with reinforcement, expectancy, and agency theories would include a base hourly wage combined with commission$-$based incentives and performance bonuses. Reinforcement theory is supported by offering immediate and consistent rewards, such as weekly bonuses or recognition for hitting sales targets or achieving high customer satisfaction scores. Expectancy theory is addressed by setting clear, achievable goals and ensuring employees understand how their performance directly leads to rewards. This motivates them by reinforcing the belief that effort will result in meaningful outcomes. Agency theory is incorporated through commission structures that tie compensation directly to company$-$aligned objectives, such as upselling premium devices or promoting service add$-$ons, aligning employee behavior with organizational profitability. The advantages of this approach include increased motivation, better performance, and stronger alignment between employee actions and company goals. However, potential drawbacks include fostering excessive competition, employee stress, or short$-$term thinking that may neglect long$-$term customer loyalty. Administering this plan could also be challenging due to the need for accurate tracking, consistent communication, and fairness in applying rewards. Overall, this type of compensation system can be highly effective if carefully managed and supported with regular feedback and coaching.