Is it permissible to work for a company that insures loans provided by banks and non-profit organizations to companies in exchange for administrative fees as part of credit risk, and is it permissible to work for a company that operates in the stock market?

Loan guarantee companies are a type of insurance company. Working for commercial insurance companies is impermissible due to its prohibition, as it involves directly committing sin or assisting in it. However, there is no harm in working for cooperative, mutual insurance companies.

As for working in stock exchange companies, it depends on the type of shares traded. If the company deals with permissible shares and its activity is lawful, then there is no harm in working for it. The same applies if its field of work is mixed, combining permissible and forbidden elements, provided that the work is in the permissible section.