What is the ruling on working in a call center that handles gas and electricity bills, where tasks include explaining automatically added late fees, and in some cases, removing them, given that these fees are considered usury (riba)?

It is not permissible to impose a fine for late payment of bills, because it is an increase on the debt, and that is forbidden usury (riba). Furthermore, assisting in this usury is also forbidden. However, if you do not impose the fine, do not calculate it, do not write it down, and do not witness its contract, then you are not assisting in usury, and there is no blame upon you for continuing your work.