PurposeCompatible with the principles of leader–member exchange (LMX) theory and social exchange theory (SET), the study explores the effect of LMX on job embeddedness and job dedication and the mediating role of employee advocacy.Design/methodology/approachThe data were gathered via a survey at four hotels in Izmir. To test the reliability and validity, 194 valid questionnaires were subjected to confirmatory factor analysis and path analysis. Structural equation modelling was used to test the hypothesized relationships.FindingsThe results show that high quality LMX and employee advocacy increase the hotel employees' job embeddedness and job dedication. In addition, the results show that employee advocacy has a partial mediating effect on the relationships between LMX and job embeddedness, and between LMX and job dedication.Originality/valueAlthough past researches have examined both various determinants of employee job embeddedness and job dedication, and consequences of high-quality LMX, they have ignored a critical factor, which is employee advocacy. This current study addresses this research gap by investigating the interrelations between LMX and job embeddedness, and job advocacy through employee advocacy in hotels. Moreover, this research is the first empirical study that analyzes the relationships between LMX, job embeddedness, job dedication and employee advocacy in the same model. Therefore, this research contributes to hospitality literature by filling this gap.