Substance abuse may be costing your company in terms of production and profit. Spotting the substance abuser and knowing where to get help can help alleviate this costly situation. The two main ways employers can find out about substance abuse is by employees who report themselves and drug testing. Substance abuse is a major problem in the workplace, that can lead to increased health benefit claims, on-the-job accidents, missed work time, and lowered productivity. About half of workplace injuries and nearly 40% of workplace deaths are attributed to substance abuse, according to a 1987 Labor Dept. survey.