Overall Drug Positivity Holds Steady at Historically High Rates while Marijuana Positivity Continued Upward Climb in the General U.S. Workforce Marijuana Positivity in the General U.S. Workforce Escalated in States That Have Legalized Recreational Marijuana as well as in Professional Office-Based Industries SECAUCUS, N.J., May 15, 2024 /PRNewswire/ -- The percentage of employees in the general U.S. workforce whose drug test showed signs of tampering increased by more than six-fold in 2023 versus the prior y ...