The purpose of this study was to examine the appropriateness of applying a process study and time study to fishery work. Samples were four kelp farming management bodies that agreed with research in Fukushima, Hokkaido. The bodies were analyzed using the process study and time study. The process study defined 14 processes and bottle neck element work. The time study calculated the standard working time for each element works. From these results, the working time of bottle neck processes for each management body was estimated and compared to the measured working time. As a result, the ratios of measured working time to estimated working times in the management bodies were 86%, 95%, 99%, 101%. In conclusion, the estimated working times agreed well with the measured working times. This suggests that fishery working time can be estimated with high accuracy. This study demonstrated the effectiveness of applying a process study and time study to fishery work.