BOD Inc. (Headquarters: Toshima-ku, Tokyo; Representative Director: Daizen Tanaka; hereinafter referred to as BOD), which aims to realize "Connecting People, Connecting to the Future" by becoming the driving force of society through people x technology, has implemented its cloud system implementation support service at Okikita Seisakusho Co., Ltd., resulting in a 75% reduction in the man-hours for attendance and payroll confirmation work. An interview article regarding this support has also been published. Case study article here Okikita Seisakusho Co., Ltd. ■ Background and Challenges: Personalization and Maintaining Employee-First Work Styles Reached Their Limit For many years, Okikita Seisakusho managed attendance and payroll using paper timecards, paper application forms, and Excel. However, as the company grew to over 60 employees, the man-hours required for cross-referencing handwritten timecards with data increased, making the concentration of work on the person in charge a serious issue. Furthermore, the company implemented flexible work arrangements such as "mid-day breaks and re-entry" to accommodate part-time employees, allowing them to align their work with their children's school events. However, these flexible operations pushed the limits of analog management. In addition, with the urgent need to respond quickly to successive legal revisions and changes in social insurance rates, it became an even more pressing issue to eliminate the risk of errors and delays caused by manual work and transition to a highly transparent labor management system. ■ BOD's One-Stop Support Established Reproducible Complex Custom Rules and a Self-Sufficient System In this case, we challenged ourselves to systemize without compromise to maintain the employee-first flexible work style that Okikita Seisakusho values. What was particularly unusual was the implementation of an extremely complex calculation logic that automatically links data from the final week of the previous mo