This paper applies a generalized ordered logit model to estimate the effects of commute trip reduction (CTR) activities, journey to work distance, job characteristics, and employers' major business types on telecommuting choices by using Washington State CTR data. Regression results suggest that employers' CTR promotion activities play an important and positive role in commuters' telecommuting choices. Employees are more likely to make a transition from not telecommuting to telecommuting at least 1 day per 2 weeks if employers consistently promote CTR strategies to enhance commuters' awareness of support from employers. Employees commuting longer distances are more likely to make the transition from not telecommuting to telecommuting at least 1 day. Employees' job characteristics and the employer's major business type act either to drive or constrain employees' telecommuting decisions.