Password Impared

For the third time in 2 days, I have had to change my husband's email password. He usually never signs out so there is no problem. If I need to sign into mine, I close his and then reopen it. He tried to get into it from his job and that is where things went bad. I do not know what he does that makes it hard to get in. Maybe he doesn't use capital letters. Maybe he uses spaces. I have been contacted by phone three times to get the password key. One time was while I was driving. I just redid the password for the third time. This is getting annoying.