As an HR expert, it is important for both the employer and employee to have clear expectations and open communication. The employer should not expect an employee to work beyond their capacity or while they are sick. This can result in burnout and ultimately a decrease in productivity. It is important for the employee to communicate their illness and availability to the employer in a timely manner. The employer should also show empathy towards the employee's situation and provide necessary support. In this case, the employer's behavior is unreasonable and lacks empathy. The employee should communicate their concerns to the employer and if the behavior continues, seek assistance from HR or a higher authority.