My partner has been working night shift for a year & a half now. He worked in the construction game before this but had major surgery which didn't allow him to go back to this line of work. This specific night shift job didn't require the physical work which suited well. Ever since starting this job he has had big trouble sleeping during the day, just cant switch off. He has seen a doctor & been given tablets to help which dont work. He has become agitated, angry & almost impossible to live with. I cant talk to him without getting snapped at, i feel like im on egg shells constantly. Im worried its now gone to far & the relationship is now unsalvagable. We've been together 10 years but i hate what he has become. Is anyone out there in the same situation?