Yes it does. You are not required to lift more than 50 lbs but when it's busy and you have to flip some fat fuck so you can change their sheets or get them on a gurney and all you have is 4 petite Filipino women who weigh 450 lbs collectively you end up having 4 tiny women moving a thunderous mountain. This is why all our nurses and hospital aids are getting horrible injuries and back problems at a rate that is more than triple other industries including construction.