The trend of temporary contractor replacements for full-time public employees on leave—akin to 'substitute teachers'—is growing in Japan, as increasing numbers of public servants seek this option. The rising popularity of this service corresponds with changing work patterns and workforce management structures in Japanese municipalities. The effects on the public services' functioning, plus the personal, financial, economic, and societal implications, are key points of observation and debate.

In Japan, job security is highly valued, and public sector roles are traditionally considered stable and well-respected jobs. The current shift towards temporary absence replacement is seen as a significant departure from the norm in a usually inflexible job market. Japanese society, traditionally valuing longevity and commitment to a single employer, is navigating this novel trend with interest and caution.

In comparison to Western countries, such as the US and EU, Japan's job market is considered less flexible, with employment typically being long-term and full-time. This new trend aligns more with the transient and flexible job market commonly seen in the West, especially in sectors like education.