Is it permissible to work in another printing press after official working hours if this results in a benefit for the company by reducing costs without harming the original work?

If the question implies that the enquirer is performing tasks assigned by the company, such as searching for a printing press to print its requirements, and the enquirer wishes to do the work himself outside his official working hours at a lower cost than if the work were done by another party, then he is not permitted to contract with himself to perform the work unless he informs his employer of this. The Shafi'is and Hanbalis prohibited the agent from buying from or selling to himself, even with the principal's permission, while the Hanafis and Malikis permitted it if it was with the principal's permission.