Recent research argues that the availability of flexible work arrangements (FWA) is unequally distributed among workers. Meanwhile, the Covid-19 pandemic has drastically transformed the way we work, including the abrupt introduction of telework. However, we know little about how workers are stratified in telework usage under the global crisis and how it differs from pre-pandemic times. This study leverages the nation-wide longitudinal survey data in Japan to investigate (a) who are more/less likely to be excluded from telework and (b) how the structure changes from 2019 to 2022, with close attention to both absolute and relative shifts. The analysis shows (a) the absolute amount of telework opportunities has increased in the wake of the pandemic; but (b) the relative inequality among workers has rather been intensified since 2020, with the probability of non-telework ranging from 0.6 to 0.9 across their socio-economic attributes and (c) labour stratification in telework use persists over time despite its fluctuating magnitude. One may call this social phenomenon ‘flexibly maintained inequality (FMI)’ in that relative inequalities remain via adjusting their absolute thresholds across worker segments. Examining the mechanism of FMI and its impact on individuals, organisations, and societies is crucial for future research and relevant policy/practice.