List the major differences among the objective model, the process model, and the situational model.

1. Objective Model:
- Focuses on achieving specific, measurable goals and objectives.
- Emphasizes the importance of setting clear targets and outcomes.
- Assumes that there is a single best way to achieve goals.
- Often used in performance management and project management.

2. Process Model:
- Focuses on the steps and procedures involved in achieving a goal.
- Emphasizes the importance of following a structured process to achieve success.
- Assumes that success is dependent on following the correct process.
- Often used in quality management and operations management.

3. Situational Model:
- Focuses on adapting to the specific circumstances and context of a situation.
- Emphasizes the importance of flexibility and responsiveness to changing conditions.
- Assumes that the best approach may vary depending on the situation.
- Often used in leadership and decision-making in complex and uncertain environments.

Objective Model

- Defined as the actual disability suffered by the injured worker
- Focuses on the physical or mental impairment
- Does not consider the worker's circumstances or abilities
- Assumes that the disability is static and does not change over time

Process Model

- Defined as the impact of the injury on the worker's job performance
- Focuses on the worker's ability to perform their job duties
- Considers the worker's circumstances and abilities
- Assumes that the disability is dynamic and can change over time

Situational Model

- Defined as the impact of the injury on the worker's life as a whole
- Focuses on the worker's social, economic, and psychological well-being
- Considers the worker's circumstances and abilities
- Assumes that the disability is a complex and multifaceted phenomenon