Refusal to work is when an employee refuses to perform a task. If the task is a natural part of the business, it may be grounds for termination.
As an employee, you have the right to know what tasks are included in your job. Being in agreement with your manager on the job description is a good start to avoid future problems.
An employee is obligated to perform all work that is naturally related to the business they are employed in. Refusal to work is a valid reason for termination if it is of an unreasonable nature. This means that there should be no reason for the employee not to perform their tasks.
Refusal to work may be acceptable in certain cases, such as when the work order poses a danger to life and health or if the employee simply did not understand what was expected. If your employer asks you to perform an illegal action, you also have the right to refuse work.