According to the self-determination theory (SDT), leaders may adopt a controlling motivational controlling style (CMS) that forces employees to think, feel, or behave in a certain way to promote employee motivation. However, a scale has yet to be developed to measure CMS in the work environment. Usually, researchers use questionnaires adapted to different contexts or designed for another motivational style. However, whether these questionnaires capture the behaviors that represent CMS in the work context is little known. This research aimed to elaborate on and analyze the validity and reliability of the questionnaire on Controlling Motivational Style at Work (CMS-W). The study was based on a literature review of the types of controlling behaviors and a review of questionnaires used by SDT researchers who assessed the controlling motivational style in different contexts. A Peruvian sample...