The leading cause of work related accidents in Sweden is falls. Many slips and falls occur on icy and snowy surfaces, but there is limited knowledge about how to prevent accidents during outdoor work in winter conditions. The purpose of this study was to describe risk factors of slips and falls and criteria for slip-resistant winter shoes from a user perspective. The result is based on focus group interviews with 20 men and women working in mail delivery, construction and home care in Sweden. The data was analyzed with qualitative content analysis.Risk factors described were related to physical work environment, risky work situations, individual and organizational factors. User criteria for winter work shoes focused on safety, adaptation to the environment, usability and own priorities.The mechanisms of slips and falls during outdoor work are complex. There is a need for more functional and user friendly work shoes than those available and user preferences should be considered by shoe designers. Future challenges include finding ways to make individually adapted shoes suitable for changing work environments, situations and tasks.