This study aimed to elucidate the impact of the COVID-19 pandemic on passengers’ behaviors in rest spaces of Osaka Monorail stations concourses. A series of comparative analyses were conducted based on the previous study in 2008 and a subsequent investigation in 2022. The following findings were made: compared to the pre-pandemic period, passengers in concourses in post-pandemic period are more inclined to minimize their stay time in rest spaces, leading to a decline in the number of temporary facility users, particularly those boarding.