The main purpose of this study is to analyze the complex interrelationships among perceived employability, employee task performance, employee retention, career resilience, and learning agility to cover this knowledge gap and provide HR practices and policies supported by evidence that can increase service sector development and contribute to Saudi Arabia's economic goals. The study used a cross-sectional quantitative design and conducted an online survey of employees in the service sector of Saudi Arabia. Snowball sampling was used during the data collection, and 403 usable responses were collected and utilized for data analysis. Data analysis techniques included descriptive statistics, Pearson correlation, and composite assessment analyses were conducted through SPSS 28. For hypothesis testing, the PLS-SEM model was used through SmartPLS4. R2adj, standardized root means square residual, Normed fit index, and Q2predict were used for model evaluation. The research findings highlighted the importance of perceived employability which is positively related to task performance and retention and show the need for organizations to train their employees so that they are characterized by career resilience and learning agility, which relate positively on their task performance and their retention within the Saudi service industry. Acquiring knowledge and understanding regarding these relationships is essential to develop targeted practices and policies to improve employee outcomes and elevate the organization's competitiveness in an economy undergoing rapid transformations. This study's findings provide practical implications regarding human resource management and organizational development strategies in Saudi Arabia that will support future research by enhancing perceived employability, building career resilience, developing employee task performance, improving learning agility, and ensuring a higher rate of employee retention, realizing the significance of each element in developing organizational goals and success. Keywords: perceived employability, employee task performance, employee retention, career resilience, learning agility.