<p>The innovative work behavior constitutes a set of actions of opportunity exploration, idea generation, idea promotion and idea realization. Although generic scales are available, there are none to explore innovative behavior in teaching practice. The objective of this study was to develop and validate a scale to measure the teacher's innovative work behavior. It was designed as an instrumental- transversal study. A sample of 458 primary school teachers (86.4% women, M<sub>age</sub> = 34.67 years, M<sub>seniority</sub> = 7.77 years) answered the developed scale with other standardized measures of psychological capital and job satisfaction. Factor analyses indicated a tetra-factorial structure that explained 69% of the total variance. Twelve items with high reliability integrated the final version of the scale. Evidence of convergent, discriminant and concurrent validity was obtained.</p>