<![CDATA[Abstract. Job satisfaction is an important factor in organizational productivity. The declining level of employees' job satisfaction in Indonesia highlights the need to examine factors influencing it, including the quality of the supervisor–subordinate relationship through Leader–Member Exchange (LMX). This study examined the effect of LMX on the job satisfaction of first-line supervisors at PT X. A quantitative, non-experimental ex-post facto correlational design was used. Data were obtained from 104 first-line supervisors selected through total sampling. The Leader–Member Exchange Multidimensional Measure (LMX-MDM) and the Job Satisfaction Survey (JSS) were analyzed using multiple linear regression. The results showed that all LMX dimensions and job satisfaction were at high levels. LMX significantly affected job satisfaction and explained 31.1% of its variance. Partially, affect and loyalty had no significant effect, contribution had a negative effect, while professional respect had a positive effect. These findings indicate that supervisors' competence and professionalism play a greater role in shaping job satisfaction than interpersonal closeness. Abstrak. Job satisfaction merupakan faktor penting dalam mendukung produktivitas organisasi. Menurunnya tingkat job satisfaction pekerja di Indonesia menunjukkan pentingnya mengkaji faktor yang memengaruhinya, termasuk kualitas hubungan atasan dan bawahan melalui Leader-Member Exchange (LMX). Penelitian ini bertujuan mengetahui pengaruh LMX terhadap job satisfaction first-line supervisor di PT X. Penelitian menggunakan pendekatan kuantitatif dengan desain non-eksperimental ex-post facto korelasional. Data diperoleh dari 104 first-line supervisor menggunakan teknik total sampling. Pengukuran dilakukan dengan Leader–Member Exchange Multidimensional Measure (LMX-MDM) dan Job Satisfaction Survey (JSS), kemudian dianalisis menggunakan regresi linear berganda. Hasil penelitian menunjukkan seluruh dimensi LMX dan job satisfaction berada pada kategori tinggi. LMX berpengaruh signifikan terhadap job satisfaction dan menjelaskan 31,1% variasinya. Secara parsial, afeksi dan loyalitas tidak berpengaruh, kontribusi berpengaruh negatif, sedangkan penghargaan profesional berpengaruh positif. Temuan ini menunjukkan bahwa kompetensi dan profesionalisme atasan lebih berperan dalam membentuk job satisfaction dibandingkan kedekatan interpersonal.]]>
