ups worker
SALTIing is supposed to be a constant effort to catch simple mistakes and bad behavior, but managers often ramp up in areas struggling with performance, according to former managers and multiple drivers.
  • UPS plants fake packages to make sure drivers and staff are following the rules.
  • Current workers and former managers told Insider the practice is known as "SALTing" inside UPS.
  • Two UPS drivers said they've seen an uptick since the end of the holiday season. 

Retail stores send secret shoppers to ensure employees are doing their jobs correctly — UPS sends SALT.