From the day my dh and I got engaged we set up a joint bank account, my wages went in there for savings on a deposit on our house for after the wedding, and we lived off my now hubbys wage. We were still living in our respective homes (parents). When we married we bought and paid off the house, we still have that account 18yrs later.
We never buy anything unless we have the cash saved to pay for it and it must be something we both agree upon, which is 90% of the time.
Whether we both worked or not we still share the same account and have never had any problems. I manage all the house hold accounts and still going strong on that same account at the bank