In 2019, SkillsFuture Singapore (SSG) reviewed the generic skills and competencies framework (GSC) which was first introduced in 2016, before developing the Critical Core Skills (CCS) comprising 16 soft skills classified within three clusters. The stated purpose of the CCS skills framework is to “create a common skills language for individuals, employers, and training providers. This further helps to facilitate skills recognition and support the design of training programmes for skills and career development. The Skills Framework is also developed with the objectives to build deep skills for a lean workforce, enhance business competitiveness and support employment and employability” (SSG https://www.skillsfuture.sg/skills-framework). A better understanding of how these Critical Core Skills are distributed across the economy, and the potential best practices regarding their development among adults, will significantly enhance SSG’s training and career guidance services to graduates and workers. In addition, this study makes important contributions to our knowledge and understanding of Critical Core Skills from an adult learner perspective. Last but not least, the instrument developed in this study will provide needs analysis for our practitioners to gauge the CCS development needs of employees or individuals. To fulfil these needs, the project first developed a tool to profile the CCS use and their importance to different occupation groups and also identify the CCS gaps in different occupation groups. Drawing on the profiling results, the project then investigated how the required CCS in different occupation groups were typically used and developed.