Is it permissible for an engineer to use the company car, designated for him by the contractor, for personal purposes with the contractor's approval? And is it permissible for him to use it to follow up on the work of another contractor? And is it permissible for the branch manager to dispose of the car without the shareholders' approval?

The regulations for using a company car assigned to an employee vary based on the internal policies of the entity or company. If the policies permit the engineer to use the car for personal matters outside of work, or to follow up on another contractor's work in the same area, or if the branch manager authorizes it, then there is no objection to that. However, if the policies do not allow any of this, then it is not permissible to use it except within the scope of official work. The determining factor lies in the regulations and laws governing the company's operations, as the Prophet, peace and blessings be upon him, said: "Muslims are bound by their conditions."