What is the ruling on working for a real estate company that employs illicit methods in its dealings with banks and breaches its commitments to clients, knowing the injustice inflicted upon clients, and are the salaries of employees in this company considered lawful or unlawful?

It is forbidden to take an interest-bearing loan from the bank. What the company owner did by breaking his promise to customers is forbidden and is a characteristic of hypocrisy. Employees must advise customers and clarify the truth to them, and it is forbidden for them to deceive them. The ruling on working for the company and the ruling on the salary depend on the intention of the company owner:

If he did not intend fraud and the construction was delayed due to reasons beyond his control, there is no harm in working for the company if the work itself is not forbidden and does not lead to assisting in interest-based dealings. The fact that the company owner bought the land or took an interest-bearing loan does not affect this.

If the company owner intended to defraud the bank and customers and consume wealth unjustly, then it is not permissible to work for this company and the salary is forbidden.