Nidec Uncovers 844 Cases of Quality Misconduct Dating to 2012, But Clears Nagamori of Direct Involvement
Third-party investigation into Japanese motor giant reveals systemic 4M-change violations across three business units; management admits structural failures kept pace with breakneck M&A growth
Nidec Corporation held a joint press conference on September 4, 2026, in which an independent Investigation Committee and the company's own management disclosed the results of a probe into quality-related misconduct that adds a second major governance crisis atop the accounting fraud scandal that first surfaced in 2025. The committee, chaired by Toshihiko Itami, identified 844 instances of inappropriate quality-related conduct and 6 cases of improper country-of-origin labeling across the Nidec Group, with evidence dating back to 2012 — though investigators could not rule out earlier violations given the absence of records predating that year.
The Scale and Shape of the Misconduct
Of the 844 quality cases, 60 were classified as "material" — meaning they involved organizational complicity, products destined for overseas public institutions, suspected legal or regulatory violations, potential recall risk, or high safety risk. The remaining 784 were deemed general cases. By far the dominant violation type was unauthorized "4M changes" — alterations to man, machine, material, or method made without prior customer notification or approval — which accounted for 805 cases, or 95.4% of the total. Falsification or fabrication of test and inspection data made up a smaller but more serious slice, at 22 cases, concentrated disproportionately within the 60 material cases (22 of 60, versus 2.6% of the general population).
Three business units — Nidec Instruments (585 cases), Nidec Mobility (125 cases), and Nidec Techno Motor (57 cases) — accounted for 90.9% of all findings. Company secretariat member Yuasa cautioned against reading this as a simple culpability ranking, noting that "just because we have a large number for one of the companies does not necessarily mean it's not inappropriate... it does not necessarily mean that the particular BU is to blame," attributing the concentration partly to product mix and the sheer volume of customer-specified change controls those units must manage.
The committee's 844 figure is notably lower than the "more than 1,000 cases" Nidec had cited publicly on May 13, a discrepancy the committee attributed to deduplication and stricter screening criteria rather than a narrowing of the actual problem.
No Smoking Gun on Nagamori, But Pressure Is Explicitly Blamed
The most consequential finding for governance-focused investors is that a forensic review of 31 current and former officers — including founder and Chairman Kyosuke Nagamori — found no evidence that any executive instructed or tacitly approved specific misconduct. Nagamori was interviewed once by the committee. Committee member Kenji Kawai was careful to frame this as a structural rather than an exculpatory finding: "There was strong pressure from the top management to achieve certain targeted goals... there was distortion in the management policies," he said, while stopping short of assigning individual blame. Pressed repeatedly by reporters on whether unrealistic top-down targets effectively constituted indirect instruction, the committee held its line that pressure was "one of the reasons" but not proof of direct complicity — an answer that visibly frustrated several journalists in the room.
Nidec's own employee survey, covering 89,973 of 97,663 group employees (a 92.1% response rate), found that roughly 40% of respondents reported feeling pressure to hit targets, while a separate 4% figure (initially misquoted by a reporter as 40%) indicated direct awareness of quality misconduct. CEO Mitsuya Kishida did not distance the company from the pressure narrative, telling reporters plainly: "I am the person that is responsible. I am the CEO, so I am the one to be held accountable."
Structural Root Cause: Growth Outpaced Controls
The committee's causal analysis points to a familiar but costly pattern for serial acquirers: Nidec's rapid expansion via M&A left quality assurance functions structurally under-resourced and insufficiently independent, with corporate-level monitoring unable to keep pace with order intake, manufacturing, and quality assurance realities at individual sites. Kishida acknowledged this directly, saying global systems were "not very strong" and that headquarters and regional management functions were under-resourced: "the headquarters is very thin in a sense because we try to save money... whether we can continue to grow or whether we can continue the healthy operations, well, we used to have [a] program. That is why we wanted to reform our system and process."
Chief Compliance Officer Masayuki Minai added that inconsistent integration of acquired companies compounded the problem, since legacy quality rules from acquired entities were often retained wholesale rather than harmonized with group standards — leaving gaps that persisted for years, in some cases undetected because the affected products never actually failed in the field, which management admitted created a false sense of security that "served as a justification for misconduct."
Financial Impact: Management Downplays Materiality, But Caveats Remain
Kishida stated that the group currently sees "no matters identified that are expected to have material effect on the Nidec group," and management does not anticipate major recalls or large-scale compensation payouts, characterizing the situation as one requiring additional testing costs and case-by-case customer negotiations rather than balance-sheet-moving provisions. Two cases involving product functionality remain under active negotiation with customers. Full financial impact assessment, including corrections to prior-year results, will be addressed at a follow-up briefing on September 30, alongside the delayed securities report.
Investors should note the compliance calendar carefully: Nidec is targeting September 30 for the securities report submission and end-of-October for its internal control attestation — both critical to the company's stated goal of avoiding delisting from the Tokyo Stock Exchange, where it currently carries a special-alert designation. Management confirmed ongoing but non-committal dialogue with the exchange, and a separate Executive Responsibility Committee investigation — tied to the earlier accounting scandal — remains unresolved, with no equivalent responsibility committee planned for the quality issues.
Customer Relationships Strained But Intact — For Now
Management confirmed no customer has yet severed ties with Nidec, though it acknowledged receiving "many voices... about having lost their trust in Nidec" since the May 13 disclosure. Automotive customers, which impose the most rigorous 4M change and traceability requirements, were flagged as a particular area of concentrated risk — the existing automotive motor and control business unit was among those most cited for material quality cases. Executives were candid that regaining automotive OEM trust will require presenting a credible group-wide prevention framework, which several customers have explicitly demanded before considering the matter closed.
Remediation Plan and Immediate Personnel Actions
Minai outlined a three-pillar remediation framework spanning system, process, and culture — including elevating quality assurance's authority to halt production lines unilaterally, enhanced corporate-level monitoring and audit, unified global QA rules with mandatory escalation to headquarters, and greater investment in automation to reduce dependence on manual, human-operator-dependent processes, which the committee flagged as an unaddressed structural weakness. Notably, the company announced personnel transfers at Nidec Instruments effective the same day as the press conference, though management stated these were part of ongoing organizational strengthening rather than disciplinary action tied to specific findings — with formal disciplinary measures against implicated individuals still pending completion of fact-finding.
Nidec's five-year strategic plan will be updated by year-end to reflect these findings, and the company said it is reviewing its business portfolio, including its historically volatile appliance and motor segments, though executives pushed back on the idea that the entire appliance business is in structural decline, citing data center cooling and air conditioning as continued growth drivers.