I like the therapist's recommendation that he switch his work hours to the day shift. Studies show that people who work overnights suffer from higher rates of depression. My friend had to quit her night shift as an x-ray technician because she couldn't handle the side effects of working overnights after a few years.

Is your husband even open to discussion about changing his shift to daytime hours so he can sleep at night? I wonder if his boss would allow him to switch to the daytime.

He NEEDS to get over his stereotype of "daytime society" b/c the overnight shift is destroying his marriage, his relationship with his children, and his own mental and physical health. I fear that is the best solution, whether he likes it or not. He sounds very narrow minded and stubborn if he refuses to make his work shift change for the betterment of himself and you and the children. Sorry you are in this situation.

Living & Coping With Shift Work Disorder | National Sleep Foundation

The Night Shift | Psychology Today