This also happens in Montana and around Four Corners, wherever there are reservations and non-native Americans mingling. The old bias against drunken Indians rears its head. Local characterizations propagate the narrative that the reservation is full of lazy drunks, dopeheads, or abusive and combative individuals.
I was able to work with members of the Ute and Navajo tribes in Four Corners years ago when our company worked on reservation lands and was required to hire a percentage of local laborers. Those guys worked as hard as the rest of us out in the July sun down in the hot canyons. They laughed at and with each other poking jibes at each other since their tribes were traditionally not allies. It was all good-natured ribbing and I'm sure they knew each other or of each other before working with us. They worked the length of our contract in the area and had few issues with attendance or effort.
Local whites always talked down about the natives but I found them to be as dependable as Mexican and central American immigrants (legal or otherwise) that I worked with in Texas and other states. These people needed jobs and were willing to work to keep a job and the quality of their efforts was on par or better than the quality of local labor.
In contrast, our company cycled through local non-native help. Many of those people appeared and worked long enough to earn a paycheck and then disappeared. Some even played the employment game where a group of friends hired out to each of the three non-local companies and on any given day your rolls would show all of them working with one of your crews, some of them with one of your crews, or none of them with your crews that day. They went where they thought the best pay opportunity of the day would be and had a friend sign them in where they were expected to be so they could earn a check there too. This went on for weeks until one of our crews had a problem in the field and in the process of sorting it out and looking for a scapegoat, they went through the rolls of potential crew members who should have had responsibility and discovered that several people listed as being present and working did not show up at all.
Since the three companies were in the same business and everyone knew everyone else our party manager had a talk with the other guys and they compared employee rolls and discovered all the overlap and the system of sign-ins. All of those people were fired immediately when they showed up for their next day's work. These were ordinary white guys who all lived in that area.