Is it permissible to work in an insurance company as a claims data entry clerk, knowing that my father considers it unlawful, and is it permissible to work there temporarily until another job becomes available?

The ruling on working for insurance companies varies depending on the type of insurance. There is no harm in working for a cooperative insurance company, but it is not permissible to work for a commercial insurance company because it constitutes aiding in sin. Regarding working for the mentioned company, it is not permissible to work for it, even temporarily.