Does an employee bear sin for work that involves correspondence related to importing car spare parts, knowing that some purchase invoices include a "marine insurance" amount, or in other cases the company is asked to handle the insurance, or the representative is asked to sign the order, which may include the insurance value?

Commercial insurance contracts are forbidden due to the elements of gharar (excessive uncertainty), riba (interest/usury), and maysir (gambling) they contain. However, if the state obliges individuals to take out such insurance, they bear no sin, and the sin falls upon those who imposed the obligation. The coerced individual should choose the minimum level of insurance. If the state mandates insurance for imported goods, there is no harm in submitting an invoice that includes the insurance value. But if there is no such obligation, then insurance is forbidden, and it is not permissible to contribute to its invoices.