She works in a company is owned by numerous partners including riba-based banks
Question

                I work in a company whose capital is funded by five different partners, including two riba-based banks. 

These partners who founded this company own a piece of land and they are bringing in utilities such as drainage, electricity and water, then they will divide it and sell it to purchasers, selling it either for cash or by instalments, with a fixed annual interest rate of 7%; please note that the transactions may not go through in some cases. My job in this company is in the secretarial division (administration work). I have been spending and saving from my salary during the time I have worked for this company, which is now 5 years, and I did not know that there might be something dubious about this money and these savings in an Islamic bank. Is my work in this company whose wealth is mixed halaal or haraam? What is the ruling on the money that I have saved, and how should I dispose of it? If it is only makrooh, will I enter the fire of Hell or be punished because of it? Please advise me and save me from this confusion and torment that I am in.
Praise be to Allah.Firstly: 
Working for 
    companies whose wealth is mixed is makrooh, according to the majority of 
    scholars, but it is not haraam unless the work itself is haraam or involves 
    helping others in doing things that are haraam, such as working in the 
    riba-based bank itself. 
Makrooh does 
    not mean haraam, so the one who does that is not sinning, but it is better 
    for the Muslim not to do that and to avoid it, and to look for work that is 
    permissible. 
Secondly: 
Selling by 
    instalments is permissible, but two points should be noted: 

    1-The contract should be free of 
    clauses imposing a penalty in the event of late payment, because this is 
    stipulating riba, and it is not permissible to write such a clause or sign 
    for it.

    2-The instalment plan should be 
    made directly by the company that owns the product, with no involvement of 
    any riba-based bank. That is because the involvement of the riba-based bank 
    in this transaction means that it will pay the whole amount on behalf of the 
    purchaser, then it will receive the instalments, so in fact this contract is 
    a riba-based loan. The bank will lend the agent one hundred, for example, 
    and the agent pays it on behalf of the bank to the seller, then it will take 
    one hundred and twenty in instalments. This is forbidden riba, as is 
    obvious.
Thirdly: 
If the 
    company is selling the land in a permissible manner – without the 
    intervention of a riba-based bank – then your work is permissible and the 
    salary that you get is permissible. But it is better for you to look for 
    purely halaal work, as stated above. 
If the 
    company is selling it in a haraam manner, such as if it stipulates 
    late-payment penalties, or the bank is involved in the instalment payments, 
    then we should look at the nature of your work in this case. If it involves 
    helping in this haraam transaction, such as writing or recording or checking 
    etc, then your work is haraam, and the salary that you get from it is 
    haraam, but what you took before you found out that it is haraam is yours to 
    keep and you do not have to give it in charity. 
Whatever you 
    got after you found out that it is haraam, you should get rid of it by 
    giving it in charity, and you must also leave this job. 
If the job 
    you do is partly permissible and partly haraam, then you should strive to 
    work out how much of it is haraam and get rid of the corresponding amount of 
    your salary. See question no. 
    81915. 
If your work 
    does not involve helping others to do haraam, rather you work in a 
    department that has nothing to do with sales by instalment for example, then 
    we hope that there is no sin on you for this job, 
We ask 
    Allaah to guide you. 
And Allaah 
    knows best.