Q: I live in Canada where I studied Refrigeration and Conditioning, which is my only field of specialty. It is well known that Shari`ah rulings are not applied in these countries, so we find different kinds of stored goods in the commercial shops. We see in the same big cold room different kinds of lawful vegetables and drinks such as milk, water and juice, as well as a partition for unlawful drinks such as wine. As for meat, we find cow, sheep and chicken, but there is pork too. Is it permissible for me to fix the air-conditioners of these rooms? It is worth mentioning that I am a fresh graduate and I am not allowed to work freely directly after graduation because the Canadian law does not allow that except after three years of working at one of the certified companies in order to master the profession. I tried to migrate to Muslim countries to practice this profession but everybody asks: Do you have experience in this field? Certification alone is not enough to get me a job in this business. Now, I am confused regarding the legal ruling in the permissibility of practicing this profession until I have the experience and can migrate from this country (Part No. 14; Page No. 423) or work for my own account to avoid fixing it if it is prohibited. Could you please answer this question? May Allah reward you with the best reward!