Decision-making is an everyday process that varies from irrelevant decisions that we may not even be aware of to big decisions that require the investment of time and effort in considering possible options to choose the optimal one. The efficiency of decision-making is gaining increased relevance in organizations and attempts are made to identify and quantify individual differences in the quality of decision-making, as well as individual characteristics that would be related to the quality of decision-making. The aim of this study was to identify the relations between employee's self-assessment of actively open-minded thinking and performance in the cognitive reflection test with an assessment of general decision-making quality and quality of decision-making based on rational thinking conducted by their work colleagues because cognitive reflection and actively open-minded thinking are proven to be good predictors in solving problems that examine heuristics and biases resistance. The only significant positive correlation was between actively open-minded thinking and the general quality of decision-making. It is possible that colleagues did not have a good insight into internal processes such as rational thinking, which could have influenced their assessment. We also associated cognitive reflection and actively open-minded thinking with a personal reputation in the organization and promotability, but no significant correlation was shown between these variables.