What is the ruling on brokering hotel rooms that are fully leased to tourism companies, where employees find rooms for customers in exchange for a large commission? And does the hotel owner's knowledge or ignorance of the matter change the religious ruling on these transactions?

In brief:

It is not permissible for hotel employees to work as intermediaries (brokers) for booking rooms and tourist services during their official working hours without explicit permission from the authorized management. If an employee does so without permission, the earnings resulting from this work are unlawful (haram), and he must repent and inform his employer of what happened. The hotel has the right to deduct the value of this work from the employee's wages.

If the employee is authorized to work as an intermediary, there is no harm in him requesting a commission from the client or the tourism company, provided that the entity from whom he takes the commission is informed of this, and that the client is not misled with unreal prices.