Why do we tend to have several different and sometimes identical accounts at several different banks, brokerage firms or even past employers? Retirement is a great time to take your finances by the horns and round up the paperwork posse. Consider consolidating all of those 401(k) plans into an individual IRA or possibly working with only one or two custodians.
It's good to alternate which spouse pays the bills every once in a while as well to make sure that you both understand the family expenses, investments and insurance policies. If one of you dies, the other spouse should be prepared to assume those responsibilities