Whoa 12 hours of sleep? I find if I get too much sleep I'm more sleepy (go figure

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Sleeping meds aren't the answer in this case I don't think.
There's lots of things he could try. I used to have horrible insomnia in high school, my school ran a bunch of sleep info sessions and the stuff I learnt helped me big time.
1. - Don't go to bed until you're feeling sleepy. (main thing that helped me) If you still feel wide awake after half an hour, get out of bed..don't just lay there getting worked up about how you can't sleep. Obvious but effective.
2. - Make your bedroom a kind of sacred place - only for sleeping. Don't watch TV or use the computer in the bedroom, this stuff keeps your mind stimulated. Minimize distractions.
3. - Set a wake up time every morning. If your partner has been out of work it's probably way too easy to lay around all day. Around 7 or 8am is pretty reasonable. Even if he slept 5 minutes during the entire night - doesn't matter, get up at that same time. Have a minimum bed time of about 10pm, don't sleep before this or get into the habit of taking naps.
4. - It helped me to picture going to sleep as catching a wave...as soon as you start feeling sleepy go to bed and catch the sleep wave. If you miss it, another one will come around in an hour or so. The 'wave' is a feeling of sedate sleepiness, it only comes around if you're relaxed.
5 - Get some exercise during the day, get some sun. Even walking or gardening is good for a start.
6 - Bath before bed. Your body temperature slightly rises while in the bath, but what makes you sleepy is when you get out and it starts to slowly fall.
7 - Solitaire. With playing cards not on the computer.
8 - Camomile Tea just smells like going to sleep for me...it's good stuff.
9 - Get rid of ticking clocks or LED lit alarm clocks in your face. Time can be distracting, I just turn my alarm clock around facing the wall.
10- Reading a book on the couch (not the bedroom) helps me chill out, but I guess some might find it too stimulating.
Lots of stuff to try. Getting him to try them out might be hard. Maybe try and get a referral to a sleep specialist if it continues to be a problem.