An Error Orientation Questionnaire (EOQ) was developed, consisting of eight scales on attitudes to and on coping with errors at work. In Study I (representative sample of a German city, N = 478) six scales were developed with the help of a confirmatory factor analysis using LISREL techniques. They comprise error competence, learning from errors, error risk taking, error strain, error anticipation, covering up errors. All constructs were validated. In a second study, items were added to the scales and two additional scales, 'error communication' and 'thinking about errors', were included. The scales were translated into English and Dutch and 160 students in the Netherlands filled out both language versions (Study II). The 8-factor solutions in English and Dutch were replicated. The issue of language equivalence of these two language versions were taken up (equivalence across correlations exists). Potentially biasing variables did not influence the solutions. Practical uses of the EOQ are pointed out.