A 2017 survey conducted by the National Safety Council found employee use of prescription drugs on the job had affected a majority of employers. The most significant effect was absenteeism or missed work (reported by 39 percent of respondents) followed by impaired or decreased job performance (reported by 29 percent) and safety concerns, such as injuries or near misses (reported by 15 percent). However, a more recent report from December 2018 is cause for even more concern—the use of non-prescription drugs in the workplace.