BACKGROUND:A considerable amount of money is invested annually in workplaces to promote creative, comfortable and safe work environments. The processes and effects of these investments are however not sufficiently studied.OBJECTIVE:The objective of this article is to examine work environment investment processes and identify organizational critical elements for optimizing investment in terms of occupational health and safety effects for employees.METHODS:Twelve case studies were conducted in different sectors. The data was collected through interviews, by studying available documents, and, in several cases, observations and measurement of hazards by means of the PIMEX-method.RESULTS:The empirical results yielded seven different critical elements for work environment investment processes. The critical elements identified were: identifying the need, risk assessment, involvement of staff, consultation with OHS expertise, procurement and delivery, implementation and training of workers, and evaluation.CONCLUSIONS:The critical elements have wide similarities with steps outlined in Swedish Work Environment Management processes, and ideas described in the Plan-Do-Act-Check model. If organizations follow this process, they are provided with improved possibilities for maximizing invested money for a safer working environment.