What is the ruling on working as an accountant for a contracting company that builds factories and warehouses for companies that produce alcohol and tobacco, knowing that the company's activity includes building other diverse factories, and at a greater proportion?

Working in contracting companies is permissible, except for building factories and warehouses for alcoholic beverages and tobacco; this is forbidden due to the prohibition of cooperating in sin and aggression.

There is no harm in the questioner's work for the company as long as it is in the permissible field of contracting. He is not harmed by the company engaging in some forbidden activities, but if he is asked to perform work related to those forbidden activities, he must refuse.