The Philippine Department of Education continues to face issues with teacher shortages and teacher retention. These challenges underscore the need to cultivate and sustain teachers’ motivation to stay in the profession. Through quantitative methodologies, this research explored the factors that influence teachers’ motivation to remain in their teaching careers. Results of the study revealed that most Filipino teacher respondents are highly motivated to continue serving as educators. This is reflected in their positive views of the eight core and contributing factors of motivation, namely, ‘sense of purpose and fulfillment’, ‘teaching as interest and passion’, ‘sense of growth and development’, ‘sense of being respected and valued’, ‘teacher well-being’, ‘school environment’, ‘salary, incentives and benefits’, and ‘government laws and policies’. Inferential analyses also revealed that length of teaching, provision of instructional resources and adequacy of school facilities have links to motivation. Through hierarchical regression analysis, a predictive model for teacher motivation, composed of motivational factors and demographic characteristics, was developed. The study also proposed a few policy recommendations based on the findings.