Is it permissible to continue in a supplementary pension scheme belonging to a telecommunications company, knowing that the pension fund owns shares in companies that produce alcoholic beverages and in banks?

The supplementary pension fund is an insurance institution, and insurance is of two types: cooperative takaful, which is rare, and commercial, which is based on gharar (definition) (uncertainty) and gambling, and investing money in haram (definition) (forbidden) matters, and this is impermissible.

So, if the fund invests the employees' money in forbidden matters, then it is not permissible to voluntarily subscribe to it, and it is obligatory to withdraw from it if possible. If she cannot, then she must donate the proportion of the unlawful gains from what she will receive from the fund to the poor and needy.