Earning, Spending, and Drug Use in a Therapeutic Workplace.

Drug addiction is a chronic, relapsing health problem that is associated with the degree to which individuals choose small, immediate monetary outcomes over larger, delayed outcomes. This study was a secondary analysis exploring the relation between financial choices and drug use in opioid-dependent adults in a therapeutic workplace intervention. Sixty-seven participants were randomly assigned to a condition in which access to paid job training was contingent upon naltrexone adherence (N = 35) or independent of naltrexone adherence (N = 32). Participants could earn approximately $10 per hour for 4 hours every weekday and could exchange earnings for gift cards or bill payments each weekday. Urine was collected and tested for opiates and cocaine thrice weekly. Participants' earning, spending, and drug use were not related to measures of delay discounting obtained prior to the intervention. When financial choices were categorized based on drug use during the intervention, however, those with less frequent drug use or frequent use of one drug spent a smaller proportion of their daily earnings and maintained a higher daily balance than those who frequently tested positive for both drugs (i.e., opiates and cocaine). Several patterns described the relation between cumulative earning and spending including no saving, periods of saving, and sustained saving. One destructive effect of drug use may be that it creates a perpetual zero-balance situation in the lives of users, which in turn prevents them from gaining materials that could help to break the cycle of addiction.