What are the criteria by which an employee can evaluate the legitimacy of his salary, especially if he faces difficulty in adhering to full working hours or completing the required tasks, and is the money earned in these cases considered unlawful and must it be returned to the company?

The employee is a special hire whose benefit is measured by time. If he dedicates himself to work during official hours, he is entitled to full pay. His inability to achieve or focus, if he has exerted his utmost effort, does not diminish his wages. As for leaving work before the end of official hours without permission, it is not permissible unless there is explicit or customary permission. The wage remains due even if the work stops. As for seeking assistance from the manager, this refers back to the employment contract or prevailing custom, while being keen on fulfilling the trust of work.