Employee performance is a reflection of the success or failure of an organization. organization in carry out task and function mainly to achieve its targets, goals, vision, and mission. Maximum performance in ASN is the main basis for achieving good governance. This study aims for now and analyzes role mediation Promotion Position and the influence of the Merit System on Employee Performance in the Regional Government of North Bolaang Mongondow Regency. This study uses a quantitative research approach through a causal mediation design and survey techniques. The study population consists of all ASN at least Group III.B in the Regional Government of North Bolaang Mongondow Regency. The number of samples in collection 146 data respondents through probability sampling techniques. Data analysis uses method Partial Least Square - Structural Equation Modeling (PLS-SEM) with SmartPLS 3.0 software. The results of the study show that the merit system has a positive and significant effect on employee performance, with a larger T-statistic value and a higher t-value. alpha (3.126>1.64) and value P-Value is smaller than the value sig (0.002 < 0.05). System merit influential positive and significant to Job promotion. The T-Statistics value is greater than the alpha value (54,740 > 1.96) and the P-Value value is smaller than the sig value (0.000 < 0.05). Job promotion has a positive and significant effect on employee performance. The T-Statistics value is greater than the alpha value (6,700 > 1.96) and the P-Value value is smaller than the sig value (0.000 < 0.05). Job promotion plays a mediating role in the influence of the merit system on employee performance. The value T-Statistics bigger from mark alpha (6,820 > 1.64), And mark from P-Value more small from mark sig (0.000 < 0.05).