Treatment for His Back Pain

Lately, my husband has been working hard both at home and work. I don't know where he got those energy, but I sure would like to have some of those energy. He works 12 hours a day for 4 days, and during his days off....he paints our house and do some of the chores I couldn't do due to sickness. Now, he complains about his pain in the back. Medicines can relieve the pain and so I tried to give him a massage but it didn't do anything to ease the pain. I just wished we can afford to pay for laser treatment for back pain so that he wouldn't not suffer anymore on back pain. The only thing I can think of is that rubbing some medicated lotion on his back to help ease the pain.