This study explored the effects of motivation and job satisfaction on to work performance of elementary public school teachers of Zone III, Schools Division of Zambales, Philippines. A descriptive research design was utilized with a questionnaire to gather data from 152 randomly selected teachers. The teacher-respondents “Strongly Agreed” on the effect of Intrinsic and Extrinsic Motivation on their Work Performance. The teachers were “Highly Satisfied” as to supervision, recognition, interpersonal relationship and work itself, but they are only “Satisfied” with Salary and Promotion on the aspects of Job Satisfaction. The study showed that teacher-respondents have an “Outstanding” work performance. The results revealed that there is a significant difference in their assessment of the effect of extrinsic motivation and there is also a significant difference in the assessment of the aspects of salary when grouped according to the position. Furthermore, the study concluded that there is a positive high relationship between motivation and level of job satisfaction. This study recommended that teachers should continue to strive and perform excellently in maintaining their outstanding performance to produce holistically and competitive learners and use this outstanding rating for their promotion.