Working full-time can be stressful, and for some, more stressful than others. Whatever the cause, a recent study showed that certain professions proved to be more likely to use alcohol or illicit drugs. SAMHSA conducted the study and polled people ages 18 to 64 employed full-time. According to the organization, dependency issues result in “lost productivity, workplace accidents and injuries, employee absenteeism, low morale and increased illness” as well as billions of dollars. Many who face addiction seek help in drug rehab centers in Palm Springs, Calif. or elsewhere, but often issues are left untreated. Here are some of the professions most likely to involve drug and alcohol abuse.