My cousin is pretty less-than-careful with his S6 active. Hes not a construction worker though.
I too am not a construction worker, but I have pretty heavily dealt my LG V10 the beat-down many times. I use an otterbox defender and a sea to summit dry sack when things get REALLY rough.
Here's a cave-crawling expedition I did with the setup. We repelled down about 170 feet underground where we split up and ended up slithering through all kinds of crazy places. Can't tell from the pic but I am pretty muddy.
Cave Rappel – Moaning Cavern Adventure Park | Cave and Mine Adventures
http://i1052.photobucket.com/albums/s450/muvotx/0124161303_zps6pyltuvd.jpg