What is the fine-grained topic of the following text: The hierarchical regression results indicate that employee preference for PRP is positively and significantly associated with individual competitiveness and occupational commitment, while being negatively and significantly related to organizational commitment and to the age group of employees who joined the labour market prior to the bursting of the economic bubble in Japan. Only return the topic.
The association between employee preference for Performance Related Pay (PRP) and various factors such as individual competitiveness, occupational commitment, organizational commitment, and age.