My bf needs to quit his job

I constantly tell him to look for a new one . He works every day except Sunday's , around 16 hours a day getting paid 11$ an hour. He usually wakes up an hour to and hour and a half because his company recently moved an hour away. So he gets up early morning and comes home late nights . He gets no benifits , no vacation , no sick days NOTHING. Problem is he delivers and installs gym equipment to residentials. So he needs to carry heavy stuff everyday. He's young ( 22 ) and hes gotten his back hurt before and missed work for a couple days . Last night he came home and his back was hurting alot. I put some cream on it but it didnt work. He woke up and can barely even walk. I dislike seeing him like this but im always telling him get another job!! Hes been there for 2 years now. Dont get me wrong hes applied at 3 different places but he doesnt put enough effort into looking for another job. 😞 i've even told him to go to school for driving trailors , since hes really good at that and he agreed but never even looked into it. Im not working right now cus i have a new born but if i had a good job i would tell him to not work until he gets better. Idk what else to do or tell him :( any advice would be great. Please no negative comments.