We develop a measure for employees' intrapreneurial behavior (IB) in organizations. IB is proposed to be a higher-order construct reflected in three dimensions: innovativeness, proactiveness and risk-taking. A nineitem measure is developed with survey data from 179 employees and their peers. We then explore how the measure correlates with various individual and contextual (job-related) variables, finding that IB is associated with proactive personality, educational attainment, job autonomy and job types (managers and sales people are more likely to be intrapreneurs). For age, we find that the relationship with IB is an inverted U.