Employment 2025

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Trends and Developments Contributed by: Hiroaki Matsui, Mari Ueki, Yui Omoteyama and Rei Yamaguchi AI-EI Law Firm AI-EI Law Firm was established in 2019, and set up as a Legal Professional Corporation; moreover, it specialises in corporate dispute resolution and la - bour/employment matters. The name “AI-EI” is de - rived from the Japanese word “ 相栄 ” (pronounced “I-A”), which means mutual prosperity. To realise mu - tual prosperity with its clients, the firm takes the un - rivalled approaches of not only accurately analysing and categorising a large amount of past data (vast experience and knowledge) like “AI” (Artificial Intel -

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ligence), but also using the elements of EI (Emotional Intelligence) so that clients’ true needs are properly understood. Thus, clients are guaranteed practical solutions that meet the substance of the dispute – not only from the perspective of economic rationality and efficiency required in business, but also with the humanity and sensitivity required in dealing with peo - ple who are the subjects and the objects of disputes and labour issues.

Authors

Hiroaki Matsui is a partner of AI-EI Law Firm. He is qualified in both Japan and New York. Hiroaki is a member of the Japan Labour Law Association, and he serves as a specially appointed professor at

Mari Ueki is a partner of AI-EI Law Firm. She was formerly a judge at the Tokyo District Court, the Niigata Family Court and the Nagoya District

Court. She serves as an adjunct lecturer at Seikei University (labour law) and Sophia University. She is qualified in Japan and has experience handling employment and labour disputes as a judge.

Shinshu University and as an adjunct lecturer at Seikei University, concerning employment and labour law. He has also been appointed as a committee member in government-funded projects, as well as a director and auditor at companies.

Yui Omoteyama is an associate of AI-EI Law Firm. She is qualified in both Japan and New York. Yui has experience providing employment and labour advice and handling corporate investigations and disputes.

Rei Yamaguchi is an associate of AI-EI Law Firm. He is qualified in Japan. Rei has experience providing employment and labour, freelance and general corporate advice and handling corporate cases and disputes.

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