Hubby forgets to wear wedding ring

Monica • My husband and I are 36 and 35, high school sweethearts, married in 2005, son Gavin born 11-27-15. PSU grad, work for small newspaper as a reporter.
My husband and I have been happily married for almost 10 years. He started a construction job last year, and since he works a lot with his hands, tools, buckets of paint, etc., he leaves his wedding ring at home. Problem is he never remembers to put it on when he's not working. Christmas Eve was a good example since he's off work for the holidays. We were away from home and I noticed he wasn't wearing it and asked him if he could please put it on when we got home. He's now sleeping and I just so happened to see the ring in the bathroom medicine cabinet. This wasn't the first time I've reminded him it would mean a lot to me if he remembered to wear it. I understand he's forgetful and not used to wearing any other jewelry, but I would feel naked without my rings. And I've let him know it kind of hurts my feelings that he never wears the ring, unless I bring it up. It is a symbol of our love and he agrees with that and promises to try harder to remember, but it doesn't happen. How can this be resolved?