M-Fro Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; Representative: Yosinori Kitawaki) conducted a "Survey on Mysterious Workplace Etiquette" targeting 493 working men and women, and compiled the data into a ranking. There are no shortage of workplace customs and manners that people feel "don't really make sense" or "why do we still do this?" Habits that originally began with the intention of showing consideration for others or building relationships may change in relevance as times and work styles evolve. This survey was conducted by Craudia, an employment video production outsourcing service operated by M-Fro Co., Ltd. (https://craudia-saiyo-movie.com/), which surveyed 493 working men and women about "mysterious workplace etiquette" and summarized the results in ranking form. Commentary on the survey results has been provided by Mr. Akihito Hosokawa of Unitas Co., Ltd. 【Request for Quoting or Reproducing Data】 When using the survey results or images from this release, please include a link to the official website URL of "Craudia Employment Video Production Outsourcing Service" (https://craudia-saiyo-movie.com/). 【Survey Overview】 Target: Working individuals Survey Period: June 18–20, 2026 Survey Organization: In-house survey Survey Method: Internet-based voluntary responses Valid Responses: 493 people (366 women / 127 men) Respondent Age Groups: 20s 21.4% / 30s 38.9% / 40s 23.7% / 50s and above 16.0% 【Survey Summary】 ・Top mysterious workplace etiquette that no one wants: "Email writing style" ・Stress caused by mysterious workplace etiquette: "Mental exhaustion" ・Main reason people can't stop mysterious workplace etiquette: "Worry about what others think" Top Mysterious Workplace Etiquette That No One Wants: "Email Writing Style" When asked about "mysterious workplace etiquette that no one actually wants," the top response from 493 working individuals was "email writing style (21.5%)". Second place was "being considerate when taking leave (15.4%)", followed by "chat