Werner isn't the "greatest" company in terms of pay, but they're not bad either. As others have stated, they just do a urine specimen collection and no one is looking at you or your junk while you pee in the cup. empty your pockets, go in the stall, pee in the cup, give it to the collector and done.
Read about my orientation/training experience with Werner.
Werner: My experience (in progress)
aside from some annoying stuff with my truck breaking down, they have treated me pretty good.
I've had a fuel sending unit replaced, qualcomm replaced and abs/traction light coming on in my truck, and Werner has gotten me into the shop each time i put in a maintenance request, no questions asked.