In the general U.S. workforce, between 2011 and 2015, marijuana positivity increased 26 percent and heroin positivity increased 147 percent.
Following years of declines, the percentage of employees in the combined U.S. workforce testing positive for drugs has steadily increased over the last three years to a 10-year high, according to an analysis of nearly 11 million workforce drug test results released today by Quest Diagnostics, the world’s leading provider of diagnostic information services.
Another notable trend is the rising positivity rate for post-accident urine drug testing in both the general U.S. and federal-mandated, safety-sensitive workplaces. Post-accident positivity increased 6.2 percent in 2015 when compared to 2914 (6.9% versus 6.5%) and increased 30 percent since 2011 (5.3%). In addition, post-accident positivity for safety-sensitive workforce has risen 22 percent during a five-year time period (2.8% in 2015 versus 2.3% in 2011).
The DTI statistics for the last five years underscore the threat to employers — and employees — from drug abusers in our workplace. The numbers on hair testing — the methodology with the longest look-back and therefore a more telling measurement of regular use — show a 34-percent positive-rate increase for illegal drug use by the general workforce in the last five years,” said Mark de Bernardo, executive director, Institute for a Drug-Free Workplace. “However, all the numbers for various testing methodologies confirm this disturbing trend and should provide a wake-up call to employers to do more to combat workplace substance abuse and to do it more effectively.