ジョブカン勤怠ヘルパー is an unofficial tool that adds several utilities to the Jobcan attendance board. It aims to make attendance management on Jobcan more convenient and efficient.

With this tool, users can automatically calculate and display the balance of work hours on the attendance book. It takes into consideration any overtime or vacation days taken from the beginning of the month to the present day.

Furthermore, the tool also provides a feature on the vacation request page that shows the remaining number of vacation days. This allows users to easily keep track of their available vacation days and make informed decisions when requesting time off.

Overall, ジョブカン勤怠ヘルパー is a valuable add-on for Jobcan users who want to streamline their attendance management process and have a better overview of their work hours and vacation days.