Working as a Cashier for a Grocery Store that Sells Haram Meats

It is the duty of every Muslim to earn his livelihood through halal (lawful) means. In case of extreme hardship, the rules of Shari`ah may be relaxed to meet the needs of people in times of dire necessity. So, if you are able to find another job, it will be good and far better for you.
Sheikh Ahmad Kutty, a senior lecturer and an Islamic scholar at the Islamic Institute of Toronto, Ontario, Canada, states: “If you have the choice to get another job, then go for it; otherwise, you don’t have to worry; since it is not something you have control over. Such jobs are unavoidable while working in a predominantly non-Muslim country, so it is difficult to be precise in such matters. However, at the same time pray to Allah to forgive you. We are told in the Qur’an, “Allah does not charge a soul with more than it can bear”. (Al-Baqarah: 286) Furthermore, we are ordered to pray to Allah, “Lord! Do not charge us with more than we can bear! Pardon us, forgive us, and have mercy upon us.” (Al-Baqarah: 286)
Having said this, however, I must also suggest that along with making lots of istighfar (seeking forgiveness), you should also give as much charity as you can afford, in order to expiate for your sins, for Allah says, “Verily, good deeds do wipe out bad deeds.” (Hud: 114)”