Per Joint Bank Account rules on death, the other joint account holder can operate the account upon the demise of the primary account holder.
2) Most joint bank accounts include automatic rights of survivorship, which means that after one account signer dies, the remaining signer (or signers) retain ownership of the money in the account. The surviving primary account owner can continue using the account, and the money in it, without any interruptions.
the payment of the balance in the deposit account to the survivor(s)/nominee of a deceased deposit account holder represents a valid discharge of the bank's liability provided:
a. the bank has exercised due care and caution in establishing the identity of the survivor(s) / nominee and the fact of death of the account holder, through appropriate documentary evidence;
b. there is no order from the competent court restraining the bank from making the payment from the account of the deceased; and
c. it has been made clear to the survivor(s) / nominee that he would be receiving the payment from the bank as a trustee of the legal heirs of the deceased depositor, i.e., such payment to him shall not affect the right or claim which any person may have against the survivor(s) / nominee to whom the payment is made.