| 1968-12 |
当社創業者 寺田 明彦が医療事務受託事業を開始 |
| 1968-12 |
The company was founded. Akihiko Terada, the founder, launched the medical administrative services business. |
| 1971-05 |
通学形式の医療事務教育を開始（人材養成事業開始） |
| 1971-05 |
Began on-site lessons for medical administration, marking the start of the education business. |
| 1972-10 |
医療事務講座風景 : 医療事務関連事業の全国展開開始 |
| 1972-10 |
Expanded the medical administrative services business nationwide. |
| 1973-08 |
当社設立（当社前身 株式会社保育総合学院設立） |
| 1973-08 |
Established as Child Care Academy Co., Ltd. |
| 1974-09 |
The company’s textbooks for the Medical Office Work (Medical) course were designated as Ministry of Labor–certified teaching materials. |
| 1975-08 |
株式会社保育総合学院を株式会社ニチイ学館に商号変更 |
| 1975-08 |
Changed the corporate name from Child Care Academy Co., Ltd. to NICHIIGAKKAN CO., LTD. |
| 1980-08 |
全国47都道府県に支店設置完了 |
| 1980-08 |
Established branch offices in all 47 prefectures of Japan. |
| 1995-07 |
株式を店頭登録 |
| 1995-07 |
Registered as an OTC company. |
| 1996-04 |
在宅介護を中心とした介護事業を開始 |
| 1996-04 |
Launched the long-term care business with a focus on in-home care. |
| 1999-03 |
東京証券取引所市場第2部上場 |
| 1999-03 |
Listed on the Tokyo Stock Exchange Second Section. |
| 2000-04 |
介護サービスパンフレット : 介護保険ガイドブック : 介護保険制度施行にあわせて介護拠点770ヵ所開設（介護事業本格展開） |
| 2000-04 |
Long-term care service brochure : Long-term care Insurance Guidebook : Established 770 nursing care facilities in response to the introduction of the long-term care insurance system, marking the full-scale expansion of the long-term care business. |
| 2002-09 |
東証一部上場広告 : 東京証券取引所市場第1部上場 |
| 2002-09 |
Advertisement on the First Section of the : Tokyo Stock Exchange : Listed on the Tokyo Stock Exchange First Section. |
| 2003-04 |
保育事業参入 |
| 2003-04 |
Entered the childcare business. |
| 2004-12 |
家事代行サービスを開始 |
| 2004-12 |
Began providing long-term preventive care services. |
| 2007-11 |
居住系介護サービスの本格展開を開始 |
| 2007-11 |
Expanded into full-scale facility care services. |
| 2011-09 |
マンツーマン英会話の株式会社GABAを子会社化（語学事業参入） |
| 2012-02 |
株式会社ニチイケアネットを通じて中国事業を開始 |
| 2013-12 |
中国現地法人日医（北京）商貿有限公司[現 日医（北京）居家養老服務有限公司]を設立 |
| 2017-02 |
ドッグサロン「A-LOVE」の展開開始（セラピー事業） |
| 2017-02 |
Launched the nationwide expansion of company-led childcare facilities. |
| 2018-02 |
国家戦略特区における家事支援外国人受入事業「サニーメイドサービス」を開始 |
| 2018-02 |
Launched “Sunny Maid Service,” a housekeeping service provided by foreign staff. |
| 2020-11 |
ＭＢＯに伴い株式を非公開化 |
| 2020-11 |
Went private through an MBO. |
| 2021-04 |
株式会社ニチイホールディングスを持株会社とした体制に移行 |
| 2021-04 |
Transitioned to a holding company structure under Nichii Holdings Co., Ltd. |
| 2024-06 |
日本生命グループによる親会社株式の取得 |
| 2024-06 |
Integrated into the Nippon Life Group. |
