Nidec Corporation (6594.T) confirmed 844 quality-control misconduct cases spanning the past decade, with most involving unauthorized changes to product materials or manufacturing processes. Other cases included falsified tests and inspections and inaccurate product-origin labeling. Chief Executive Mitsuya Kishida apologized to investors, group companies, customers and society, saying the company was working to review and improve its quality controls. Nidec said almost all of the misconduct was carried out by employees facing intense pressure to deliver results. The investigation began after accounting fraud surfaced last year and found no safety problems linked to the quality violations so far, meaning the company does not anticipate massive recalls. The earlier investigation report said the cases covered 12 business divisions and subsidiaries, with about 95% involving 4M change violations and 60 classified as critical quality matters with potential recall implications. An external committee linked the misconduct to management pressure for short-term performance and cost reductions, while finding no evidence that founder Shigenobu Nagamori or other senior managers directly ordered or participated in the violations. Nidec is pursuing disciplinary and governance reforms. Its shares rose 5.7% Friday, even as the Tokyo Stock Exchange's Security on Alert designation and an end-of-October deadline to demonstrate internal-control improvements remain important risks. The accounting scandal has been estimated to have reduced net profit by ¥160.7 billion, or about $1.0 billion, and delayed financial reporting.