Hindu succesion act

Dear all, We are Pvt. Ltd. Co. , one of our employee expired suddenly on one fine morning due to heart attack. as a part of incentive we have term life insurance policy securing our employees at large. within a span of every three years Company compulsorily acquires fresh nomination details from all the employees. however , such nomination is on simple plain form signed by employee. My query is as under ? 1. we have the form duly signed by employee stating that all the benefits should passed on to his wife. on the basis of this nomination can we make all payments to his wife? 2. do we as a Company liable to observe the rules of the sucession act and make the payment only on the basis of rules prescribed by suceesion Act? 3. if we make entire payment to his wife on the basis of nomination form and get the indemnity signed by the wife stating that she is only legal heir and she will make the loss good if any claim arise in future , will it sufficiently protect the interest of the Co?? do we need to take this indemnity on the Stamp Paper