With the ongoing evolution in technology, there is an increasing need to address participation in lifelong learning in Singapore's construction industry. It is necessary for employees and workers in the construction sector to acquire skillsets and knowledge to adapt to the ever-changing world. This study attempts to identify ways to increase participation in lifelong learning in the construction industry in Singapore by examining motivational theories for drivers and barriers. With the establishment of the conceptual framework, this study adopts a quantitative approach, using a questionnaire survey, the results of which are analysed using the SPSS and SmartPLS 3.0 software. The result of the analysis strongly supports the use of self-determination theory (SDT) and the fulfilment of three basic psychological needs -- competence, autonomy, and relatedness of individuals -- will produce a significant effect on the participation of lifelong learning within the construction industry. This means that the practical use of this theory in the construction industry will gradually increase individuals' participation in lifelong learning. This study examined theories of amotivation and barriers, and both were demonstrated to be insignificant affecting participation rates. This study also identified institutional barriers as a key factor within the barrier domain, suggesting that changes in the institutional situation may help individuals to fulfil their lifelong learning dream.