Alcohol availability and workplace drinking: Mixed method analyses

Objective: This article investigates the relationship between subjective social and physical availability of alcohol at work and work-related drinking. Method: We integrated survey and ethnographic methods to determine if and why physical and social availability of alcohol predicted work-related drinking in a manufacturing plant with approximately 6,000 employees. Survey data were obtained from in-home interviews with 984 randomly selected workers. Respondents were asked about their overall and work-related drinking, their perceptions of the ease of obtaining or consuming alcohol in the plant, the work-related drinking of others and their approval/disapproval of work-related drinking by co-workers. Ethnographic data were obtained from 3 years of periodic onsite observations and semistructured interviews with key informants to investigate factors underlying alcohol availability and drinking at work. Results: Structural equations modeling of the survey data revealed that subjective social availability of alcohol at work, and particularly perceived drinking by friends and co-workers, was the strongest predictor of work-related drinking. Typical frequency and quantity of alcohol consumption and heavy drinking were predictive also. Subjective physical availability of alcohol was not significantly related to drinking at or before work. Findings from the ethnographic analyses explained survey findings and described characteristics of the work culture that served to encourage and support alcohol availability and drinking. Conclusions: These results are the first to show significant relationships between alcohol availability and drinking at work, to explain dynamics of that relationship and to demonstrate the potential risks of using only quantitative or only qualitative findings as the basis for prevention.