In February 2022, BNSF Railway implemented a points attendance system named "Hi Viz" that a union president called, "the worst and most egregious attendance policy ever adopted by any rail carrier." In the system, each worker starts with 30 points and loses points for taking a day off. Workers can accrue 4 points by being on-call for 14 straight days, but any time off, even for illness or a family emergency, resets the clock. Unions representing about 17,000 workers threatened to strike over the points system, but BNSF Railway sued and won a restraining order to prevent the unions from striking.