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Portrait of Kajima Corporation

Photo: Rs1421 · CC BY-SA 3.0 · Wikimedia Commons

Headquarters: Japan — Construction / génie civil / immobilier / infrastructures

Kajima Corporation

Energy, mining and industry

Fiche documentée couvrant 7 controverses, dont « Origines de Kajima dans une entreprise de charpenterie à Edo » et « Transformation en société constituée ».

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Profile No. 4722 · Updated on 12 October 2026

Portrait of Kajima Corporation

Photo: Rs1421 · CC BY-SA 3.0 · Wikimedia Commons
7Documented controversies+ 1 background event
13Sources
0Formal charge · all time
1Conviction

§ Legal statuses reflect the documented sources as of the date shown; they replace neither court decisions nor the presumption of innocence. Counts are not a rating. Methodology

I. Documented controversies

01

2017–2026

Truquage des appels d'offres du Chūō Shinkansen

Conviction

La JFTC a accusé Kajima, Taisei, Obayashi et Shimizu d'avoir coordonné les adjudicataires et les prix de travaux liés au Chūō Shinkansen. Kajima a contesté sa condamnation jusqu'à la Cour suprême, qui a rejeté son recours en septembre 2026.

Attribution
Directly implicated

Sources · 3

  1. [1]
    Japan Fair Trade CommissionThe JFTC filed a criminal accusation concerning bid-rigging for the Chuo Shinkansen projectRegulatory authorityVery high reliability
  2. [2]
    Jiji Press / Nippon.comTop Court Rejects Appeals in Maglev Bid-Rigging CaseNews agencyHigh reliability
  3. [3]
    Kajima CorporationKajima Integrated Report 2024Company documentVery high reliability

Last verified: 23 September 2026

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02

2024–2025

Utilisation de matériaux asphaltés ne correspondant pas aux spécifications contractuelles par Kajima Road

Investigation

Le ministère japonais des Transports a identifié des travaux dans lesquels Kajima Road avait utilisé des matériaux recyclés alors que les contrats prévoyaient des granulats neufs; des suspensions administratives ont suivi.

Sources · 2

  1. [1]
    Ministry of Land, Infrastructure, Transport and TourismResults of investigation into asphalt pavement material discrepanciesRegulatory authorityVery high reliability
  2. [2]
    Ministry of Land, Infrastructure, Transport and TourismNegative information search — Kajima RoadOfficial documentVery high reliability

Last verified: 23 September 2026

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03

2025

Suspensions de marchés publics après accidents de chantier

Civil / administrative proceedings

Des autorités japonaises ont imposé en 2025 des suspensions temporaires de participation à certains marchés publics à Kajima à la suite d'accidents de chantier, dont un accident de tunnel où une chute de roche a blessé un travailleur.

State of the evidence
Documented
Attribution
Directly implicated

Sources · 2

  1. [1]
    RegBase / Japanese procurement noticeProcurement suspension — Kajima construction accidentMedium reliability
  2. [2]
    Kyushu Regional Development Bureau, MLITFY2025 suspension listOfficial documentVery high reliability

Last verified: 23 September 2026

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04

2019–2023

Cartel des mélanges asphaltés impliquant Kajima Road

Civil / administrative proceedings

La JFTC a sanctionné Kajima Road dans le cartel national des mélanges asphaltés, avec une surcharge de plus de 5,8 milliards de yens. Les recours ultérieurs de la filiale ont échoué.

Sources · 2

  1. [1]
    Japan Fair Trade CommissionCease-and-desist orders and surcharge payment orders concerning asphalt mixtureRegulatory authorityVery high reliability
  2. [2]
    Kajima CorporationKajima Integrated Report 2024Company documentVery high reliability

Last verified: 23 September 2026

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05

2007

Dossier de truquage d'appels d'offres du métro de Nagoya

Allegations

Kajima figure parmi les grands entrepreneurs cités dans l'affaire de coordination des offres portant sur des travaux du métro municipal de Nagoya, dossier ayant donné lieu à des accusations pénales par la JFTC.

Attribution
Directly implicated

Sources · 1

  1. [1]
    Japan Fair Trade CommissionSAIC Symposium 2007 — Enforcement against bid riggingRegulatory authorityVery high reliability

Last verified: 23 September 2026

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06

1993–1994

Affaire de corruption des années 1990 impliquant un ancien vice-président

Formally charged — against a former vice-president

Protagonist not prosecuted — these proceedings are not counted in their formal charges or convictions.

L'ancien vice-président Shinji Kiyoyama a été poursuivi dans le contexte d'un versement de 10 millions de yens à l'ancien ministre de la Construction Kishiro Nakamura, afin d'obtenir une intervention relative à une affaire de truquage d'appels d'offres.

Person targeted by the proceedings
a former vice-president
Role of the person profiled
Protagonist not prosecuted

Sources · 2

  1. [1]
    UPIFormer Japanese building official indicted on bribe chargePressHigh reliability
  2. [2]
    Japan Press WeeklyFormer construction minister's conviction finalizedPressMedium reliability

Last verified: 23 September 2026

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07

1930

Transformation en société constituée

No legal proceedings

Kajima est constituée en société en 1930, après plusieurs décennies d'activité de construction.

State of the evidence
Documented
Legal status — source text
Not applicable
Attribution
Directly implicated

Sources · 1

  1. [1]
    Kajima CorporationCorporate DataCompany documentVery high reliability

Last verified: 23 September 2026

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II. Documented background

Documented biographical or institutional milestones (elections, appointments, foundings, acquisitions…). These are not controversies and are not counted as such.

  1. 1840

    Origines de Kajima dans une entreprise de charpenterie à Edo

    Iwakichi Kajima ouvre en 1840 une activité de charpenterie à Edo, point de départ historique de Kajima.

    Sources · 2
    1. Kajima Corporation — Corporate Data
    2. Kajima Corporation — Kajima Integrated Report 2019 — History

III. Constellation of documented links

No documented link with another published profile for now.

Two profiles are linked when a documented controversy of one names the other. The link points to that controversy and its sources; it does not indicate a personal relationship.

IV. Has something changed?

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