| 1840 |
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Iwakichi Kajima founds a carpentry business in Edo (present-day Tokyo) |
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| 1998 |
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Akashi Kaikyo Bridge |
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| 1968 |
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Kasumigaseki Building |
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| 1984 |
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New Kokugikan Sumo Arena |
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| 1860 |
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Kajima pioneers the first Western-style building in Yokohama (Ei-Ichiban Kan) |
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| 1880 |
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Kajima Gumi is established |
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| 1891 |
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Begins construction on the Usui Railway Line |
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| 1899 |
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Begins railway construction projects in Korea and Taiwan |
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| 1918 |
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Begins constructing the Tanna Tunnel (17-year project) |
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| 1923 |
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Participates in reconstruction work following the Great Kanto Earthquake |
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| 1924 |
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Completes Japan's first concrete dam (Ohmine Dam) |
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| 1930 |
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Incorporates (issues stock, capitalized at ¥3 million) |
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| 1945 |
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Begins support of postwar reconstruction |
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| 1949 |
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Founds the Kajima Technical Research Institute (the first research facility in Japan's construction industry) |
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| 1950 |
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Pioneers the first joint venture with Morrison-Knudsen of the United States |
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| 1957 |
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Completes Japan's first nuclear reactor |
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| 1959 |
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Begins construction of the Tokaido Shinkansen (Bullet Train) Line |
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| 1961 |
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Lists its stock on the Tokyo and Osaka stock exchanges |
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| 1963 |
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Attains the world's No. 1 construction company ranking (by total contract value)
Constructs facilities for the Tokyo Olympic Games Completes the New Tanna Tunnel for the Shinkansen |
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| 1964 |
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Establishes Kajima International Inc. (KII) in Los Angeles |
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| 1968 |
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Completes Japan's first high-rise building (the Kasumigaseki Building) |
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| 1969 |
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The Kajima Design Division wins the bid to construct the new Supreme Court Building in Tokyo |
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| 1971 |
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Completes the 47-story Keio Plaza Hotel (Japan's first super-high-rise hotel), in Tokyo's Shinjuku district |
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| 1978 |
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Introduces company total quality control Completes the International Trade Center in Berlin |
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| 1982 |
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Receives the Deming Prize |
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| 1983 |
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Establishes Chung-Lu Sino-Kajima Construction Co., Ltd. in Taiwan |
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| 1984 |
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Completes the New Kokugikan Sumo Arena in Tokyo |
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| 1987 |
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Establishes Kajima Europe B.V. (KE) in the Netherlands |
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| 1988 |
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Establishes Kajima Overseas Asia Pte Ltd (KOA) in Singapore Completes the Seikan Tunnel in Japan (world's longest tunnel) |
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| 1994 |
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Completes the Kansai International Airport |
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| 1995 |
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Renovates the Suez Canal tunnel |
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| 1997 |
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Completes the Tokyo Wan Aqualine Obtains ISO 9000s |
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| 1998 |
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Completes the Akashi Kaikyo Bridge Obtains ISO 14000s |
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| 1999 |
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Celebrates the 160th anniversary of its establishment |
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| 2003 |
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Completes the Shiodome Tower in Tokyo |
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| 2006 |
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Completes Akihabara Crossfield in Tokyo |