Calvin consistently receives additional tasks from his supervisor and peers due to his adeptness in completing them promptly, despite their falling outside his designated responsibilities. He finds himself grappling with heightened stress levels stemming from his workload and the expectations set forth by his colleagues, leading to feelings of frustration and occasional conflict within the office environment. In light of these circumstances, what would be the most suitable approach within the realm of Human Resource Management and Development to aid Calvin?Design of Organization and JobEmployee AssistanceOrganizational Development's Synergistic EffectUnion-Labour RelationsAll of the above

The most suitable approach within the realm of Human Resource Management and Development to aid Calvin would be "Employee Assistance". This approach focuses on helping employees deal with personal problems that might adversely impact their work performance, health, and well-being. It includes services such as assessments, short-term counseling, referrals, and follow-up services for employees.

While all the options mentioned could potentially help in some way, Employee Assistance directly addresses Calvin's stress and frustration stemming from his workload and the expectations set forth by his colleagues. It can provide him with the tools and resources to manage his stress, improve his work-life balance, and enhance his overall well-being.

However, it's important to note that a comprehensive approach might involve elements of the other options as well. For example, "Design of Organization and Job" could involve redefining Calvin's role to better align with his skills and workload, and "Organizational Development's Synergistic Effect" could involve creating a more supportive and collaborative work environment. "Union-Labour Relations" might be less directly applicable unless there are specific union-related issues affecting Calvin's situation.