What is the ruling on working in Pepsi company factories, and what is the ruling on the salary obtained, especially with the doubt about the existence of the pepsin substance derived from pigs, and in the event of refusal, a sum of money must be paid?

The basic principle concerning work in this company is permissibility (Jawaaz). The doubt about the presence of pepsin derived from pork does not affect this basic principle, for the original assumption is its absence, and "certainty is not removed by doubt." Even if its presence were assumed, and it transformed into another substance, it would become pure through transformation, according to the preponderant opinion among scholars.

Ibn Al-Qayyim said in I'laam Al-Muwaqqi'een: "It is impossible for the ruling of something impure to remain after its name and description have ceased. The ruling follows the name and description, orbiting with them in existence or non-existence. Thus, the texts addressing the prohibition of carrion, blood, pork, and alcohol do not encompass crops, fruits, ashes, salt, or vinegar, neither in wording, nor in meaning, nor by textual evidence, nor by analogical deduction."

Therefore, there is no harm in your working for this company.