The Korean film industry has achieved remarkable success in recent years. However, the filmmakers behind the scenes have received relatively little attention, leading to precarious labor conditions. This paper aims to shed light on the reality that filmmakers face through participatory observation at film production sites. Commercial film shooting sites were visited and observed 14 times over 3 months. The researcher observed various aspects of the film sites from a cultural research perspective. In particular, the researcher used the theory of flexibility to assess the type of employment, labor process, and socialization of filmmakers. The study revealed that Korean filmmakers experience labor flexibility and are constantly exposed to the risk of extreme work-life balance disruption and job loss. This is due to the nature of their work, which often involves long hours and tight deadlines. The study also found that Korean filmmakers are often underpaid and undervalued, despite their contributions to the industry. The researcher hopes that this study will raise awareness about the challenges faced by Korean filmmakers and encourage further research into this important topic. By shedding light on these issues, we can work towards creating a more equitable and sustainable film industry in Korea.