All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad is His slave and Messenger.
It is probable that this project is a Mudhaarabah (an Islamic transaction in which a person gives an amount of money to another person in order to trade with it and the second takes a share in the profit, like one-fourth, or half, or a third and the like) in a way that this company is like the worker who actually runs Mudhaarabah, and the money that the participant pays is like the capital money of Mudhaarabah between him and the people who are running the project. The people who are running the project constitute the worker of Mudhaarabah here and his profession is to invest the money of the fund so that its profit will be divided among the members. For this transaction to be valid, there are three conditions that should be met:
1- The money of Mudhaarabah should be invested in permissible projects. Therefore, if this money is invested by putting it in institutions and banks that deal with Riba (interest and/or usury), then it is not permissible to join this fund.
2- The capital money of a member should not be guaranteed for him; rather, it should be subjected to profit and loss, as in the case of a correct Mudhaarabah.
3- The profit of a member should be known and agreed in advance, and it should be defined by a known percentage from the profit but not from the capital money.
If the matter which you mentioned is a Mudhaarabah, then we have two concerns with the details that you mentioned:
1- It is not permissible to withdraw from the retirement pension scheme once a subscriber joins it. In principle, Mudhaarabah is one of the permissible contracts and it is permissible for each of the two parties to invalidate the contract whenever he wishes. Nevertheless, it is possible to agree on the period of Mudhaarabah according to some scholars .
2- If the contributor dies, then his wife will get the retirement pension scheme, and vice-versa (in case the wife dies while she is the contributes) and if she (he) dies, then the money will be divided on the legal heirs of the participant. In principle, the retirement pension scheme is a Mudhaarabah, so it is the right of all the legal heirs.
To conclude, we advise the people who are running such projects to first fear Allaah, and then appoint some scholars from their country to control whether or not the financial transactions are in conformity with Sharee’ah, because the unlawful transactions are widespread and many, and some of them are not known to many people.
We ask Allaah to make those who run such projects successful. For more benefit, please refer to Fataawa 90770 and 82105.
Allaah Knows best.