{ "spec_version": "4", "endpoint": "history", "stock_code": "1820", "company_name": "西松建設", "content_lang": "ja", "meta_lang": "en", "canonical_url": "https://the-shashi.com/tse/1820/decisions/", "api_url": "/api/1820/history.json", "updated": "2026-10-01", "license": "© 2026 Yutaka Sugiura. All rights reserved.", "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/1820/decisions/", "source": { "chapters": { "html_url": "https://the-shashi.com/tse/1820/", "primary": [ "社史", "有価証券報告書", "新聞・雑誌記事" ], "extraction": "一次資料を読み合わせて執筆" }, "long_term": { "primary": [ "会社年鑑（1986年版）", "会社年鑑（1963年版）", "会社年鑑（1976年版）", "会社年鑑（1967年版）", "会社年鑑（1971年版）／会社年鑑（1976年版）", "会社年鑑（1971年版）", "会社年鑑（1967年版）／会社年鑑（1976年版）" ], "extraction": "EDINET の XBRL、kabupro 掲載の旧有価証券報告書、会社年鑑・社史等からの転記", "row_field": "reference", "caveat": "創業期から現在までを 1 本に繋いだ長期系列のため、年代により出所・単位・連結範囲が変わる。行ごとの reference / unit / consolidation を必ず参照すること" } }, "title": "西松建設の歴史概略", "eras": [ { "title": "美濃国安八郡での西松桂輔の土木請負業創業", "start_year": 1874, "end_year": 1912, "phase": "founding" }, { "title": "西松組への商号変更と株式会社化", "start_year": 1913, "end_year": 1947, "phase": "founding" }, { "title": "東証上場と香港支店開設による海外進出", "start_year": 1948, "end_year": 1973, "phase": "stable_growth" }, { "title": "愛川衝撃振動研究所の開設", "start_year": 1974, "end_year": 2008 }, { "title": "元社長の政治資金規正法違反と伊藤忠商事との資本業務提携", "start_year": 2009, "end_year": 2026, "phase": "scandal" } ], "overview": [ { "label": "創業", "text": "1874年（明治7年）、西松桂輔氏が九州の若松で個人の土木請負を始めた。官設と私設の鉄道建設が各地で始まった時期で、西松桂輔氏は鉄道当局の御用達を務める工事業者として出発し、当初は九州と四国の鉄道工事に従事した。1906年4月には二代目の西松光治郎氏が事業を継ぎ、西松工業所の屋号で営業を続けている。ただし、明治の終わりまでの事業は鉄道工事の一本に限られ、事業体は資本の乏しい個人の請負のままであった。" }, { "label": "決断", "text": "鉄道当局の新線に合わせて工区を移し、規模を広げた会社である。九州と四国の工事から出発した請負は、明治20〜30年代に新線の着工が相次ぐと、東海道線を皮切りに信越線・筑豊線・鹿児島線へ工区を移した。その結果、九州の個人の請負は本州にまたがる鉄道工事業者となった。さらに1906年の代替わりでは西松工業所の屋号を立て、創業者の名で請けていた工事を事業体の名で請ける体制に改めた。個人の信用を屋号の信用へ移し替えたことで、創業者の退任後も鉄道当局との取引を続ける足場ができた。" }, { "label": "現況", "text": "現在の主力事業は、祖業の土木ではなく建築である。2026年3月期の連結売上高は3,960億円、営業利益は280億円で、建築事業が売上2,167億円・利益138億円、土木事業が売上1,219億円・利益91億円を占める。一方で、不動産の開発と運営を担うアセットバリューアッド事業は、売上250億円に対して利益77億円を出しており、利益率は3割に達する。これに対して国際事業は24億円の赤字で、2024年3月期から3期続けて損失を計上している。" }, { "label": "競合", "text": "中堅ゼネコンの中で、売上高は小さく利益率は上位にある。2026年3月期の売上高3,960億円は、戸田建設の6,457億円、熊谷組の4,877億円、[安藤・間](/tse/1719/)の4,396億円をいずれも下回る。一方で営業利益率7.1%は安藤・間の7.6%に次ぎ、戸田建設の5.9%、熊谷組の5.6%を上回る。ただし、この差を生んでいるのは請負の採算ではなく、アセットバリューアッド事業の利益である。この事業を除いて計算すると、建設の利益率は5%台にとどまり、戸田建設や熊谷組と同じ水準に並ぶ。" } ], "profile": [ { "key": "founding_business", "label": "祖業", "value": "鉄道工事の土木請負" }, { "key": "current_issue", "label": "現在の注力課題", "value": "不動産事業の拡充と国際事業の赤字解消", "tags": [ "不動産開発", "収益改善" ] } ], "timelineLead": "1874年に西松桂輔氏が始めた個人の土木請負が起源。\n鉄道当局の御用達として東海道線・信越線・筑豊線・鹿児島線などの鉄道工事を手がけ、九州の請負から本州にまたがる工事業者へ育った。売上高3,960億円の中堅ゼネコンで、営業利益率7.1%は同業の上位に位置する。", "foundingStory": true, "summary": { "description": "西松建設（旧西松組）の歴史。1874年、西松桂輔氏が美濃国安八郡で土木請負業を創業。1948年の西松建設への改称、2009年の元社長起訴と指名停止処分、シティインデックスイレブンスの筆頭株主化までの沿革と経緯を執筆。" }, "chapters": [ { "start_year": 1874, "end_year": 1912, "main_title": "美濃国安八郡での西松桂輔の土木請負業創業", "subsections": [ { "title": "明治7年に西松桂輔氏が始めた土木請負と、九州・四国から東海道・信越へ延びた鉄道工事", "text": "西松建設の起点は、1874年（明治7年）に初代の西松桂輔氏が個人で始めた土木請負にある。1962年の経済誌の誌面は、その創業の地を九州の若松と記しており、事業は個人の商いとして始まった。1968年刊の企業史の書籍も、同じ明治7年に西松桂輔氏が土木建築の仕事に携わったことを創業に置いた。1961年の証券誌は、日本の近代的な土木請負業の出発点を鉄道工事に求めた。そのうえで西松も、鉄道の御用達を務める工事業者として事業を起こしたと整理している。発注者が官の鉄道当局に限られていた時期に、その御用達の地位を得たことが、資本の乏しい個人の請負に継続した仕事の口をもたらしたと推察される。\n\n西松桂輔氏の請負は、はじめ九州と四国の鉄道建設に従事した。各地で鉄道路線の建設が相次ぐと、西松桂輔氏は事業の規模を段階的に広げた。東海道線を皮切りに、信越線・筑豊線・鹿児島線の鉄路建設の工事を手がけた。工区は九州北部の筑豊と南部の鹿児島に加え、本州の東海道と信越の山間部にまで及んだ。路線名から見ると、請け負った工事は本州の幹線と九州の炭鉱地帯の路線の双方にわたっていた。1962年の経済誌の誌面は、創業から90年近い老舗である点を、新興の建設業者との差として挙げた。新線の着工が続く時期に工区から工区へ移り続けた働き方が、九州の個人の請負を本州にまたがる鉄道工事業者へ育てたのだろう。", "references": [ { "title": "企業の歴史 明治百年 1968「西松建設」", "year": null, "month": null, "date": null, "url": null, "quotes": [] }, { "title": "証券 151 1961年12月号（横山）", "year": null, "month": null, "date": null, "url": null, "quotes": [] }, { "title": "野田経済 848 1962年12月3日号", "year": null, "month": null, "date": null, "url": null, "quotes": [] } ], "start_year": 1874, "opinionPos": [ [ 289 ], [ 292 ] ] }, { "title": "二代目の西松光治郎氏が継いだ西松工業所と、宮崎線で見せた西松組の進出", "text": "1906年（明治39年）4月、二代目の西松光治郎氏が初代の西松桂輔氏から事業を継いだ。西松光治郎氏は、西松工業所の名を掲げて営業を続けた。1961年の証券誌の沿革は、この二代目を西松光次郎氏と表記している。翌1962年の経済誌の誌面は西松光治郎氏と記しており、二つの誌面で名の一字が異なる。1968年刊の企業史の書籍は、同じ1906年を西松工業所としての独立の年に位置づけた。初代の個人名で請けていた工事は、この年から西松工業所という屋号の下での工事に変わった。代替わりの時期に屋号を立てたのは、鉄道の発注者に対して、創業者が退いた後も事業が続くことを示す狙いがあったとみられる。\n\n西松工業所は、初代の西松桂輔氏が九州と四国の鉄道建設で重ねた実績を引き継いで出発した。1906年に独立した体制が固まるまでには、明治の年号が終わった後の1914年（大正3年）まで時間を要した。1968年刊の企業史の書籍は、東海道線や信越線、筑豊線、鹿児島線の工事を、独立に先立つ時期の実績としてまとめて並べている。1961年の証券誌も、明治期の西松を鉄道御用達の工事業者として描き、ダムや水力発電の工事はその後に加わったと記した。明治の終わりまでの西松工業所は、鉄道工事の一本に事業を絞った請負業者であり、九州で培った鉄道当局との取引が受注の足場になったと思われる。", "references": [ { "title": "企業の歴史 明治百年 1968「西松建設」", "year": null, "month": null, "date": null, "url": null, "quotes": [] }, { "title": "証券 151 1961年12月号（横山）", "year": null, "month": null, "date": null, "url": null, "quotes": [] }, { "title": "野田経済 848 1962年12月3日号", "year": null, "month": null, "date": null, "url": null, "quotes": [] } ], "start_year": 1906, "opinionPos": [ [ 289 ], [ 282 ] ] } ] } ], "long_term": [ { "year": 1950, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1951, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1952, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1953, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1954, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1955, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 77, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 1.5, "net_margin": 1.948, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1956, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 75, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 1.7, "net_margin": 2.266, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1957, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 96, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 2.1, "net_margin": 2.187, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1958, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 105, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 1.2, "net_margin": 1.142, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1959, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 109, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 2, "net_margin": 1.834, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1960, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 116, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 2.4, "net_margin": 2.068, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1961, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 201, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 2.487, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1962, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 222, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 7, "net_margin": 3.153, "employees": null, "reference": "会社年鑑（1963年版）" }, { "year": 1963, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 296, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 5, "net_margin": 1.689, "employees": null, "reference": "会社年鑑（1967年版）" }, { "year": 1964, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 348, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 9.5, "net_margin": 2.729, "employees": null, "reference": "会社年鑑（1967年版）" }, { "year": 1965, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 421, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": "当期純利益", "net_profit": 11.1, "net_margin": 2.636, "employees": null, "reference": "会社年鑑（1967年版）" }, { "year": 1966, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 363, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 19.9, "net_profit_jp": "当期純利益", "net_profit": 11.3, "net_margin": 3.112, "employees": null, "reference": "会社年鑑（1967年版）／会社年鑑（1976年版）" }, { "year": 1967, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 391, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 16.6, "net_profit_jp": "当期純利益", "net_profit": 11.6, "net_margin": 2.966, "employees": null, "reference": "会社年鑑（1971年版）／会社年鑑（1976年版）" }, { "year": 1968, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 421, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 18.3, "net_profit_jp": "当期純利益", "net_profit": 11, "net_margin": 2.612, "employees": null, "reference": "会社年鑑（1971年版）／会社年鑑（1976年版）" }, { "year": 1969, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 511, "operating_profit_jp": "営業利益", "operating_profit": 25, "ordinary_profit_jp": "経常利益", "ordinary_profit": 24.2, "net_profit_jp": "当期純利益", "net_profit": 13.8, "net_margin": 2.7, "employees": null, "reference": "会社年鑑（1971年版）" }, { "year": 1970, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 622, "operating_profit_jp": "営業利益", "operating_profit": 35.1, "ordinary_profit_jp": "経常利益", "ordinary_profit": 34, "net_profit_jp": "当期純利益", "net_profit": 20.1, "net_margin": 3.231, "employees": null, "reference": "会社年鑑（1971年版）" }, { "year": 1971, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 756, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 33.3, "net_profit_jp": "当期純利益", "net_profit": 18.5, "net_margin": 2.447, "employees": null, "reference": "会社年鑑（1976年版）" }, { "year": 1972, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 829, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 45.7, "net_profit_jp": "当期純利益", "net_profit": 27.2, "net_margin": 3.281, "employees": null, "reference": "会社年鑑（1976年版）" }, { "year": 1973, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1028, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 50.4, "net_profit_jp": "当期純利益", "net_profit": 30.4, "net_margin": 2.957, "employees": null, "reference": "会社年鑑（1976年版）" }, { "year": 1974, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1209, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 40.6, "net_profit_jp": "当期純利益", "net_profit": 29, "net_margin": 2.398, "employees": null, "reference": "会社年鑑（1976年版）" }, { "year": 1975, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1377, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 62.2, "net_profit_jp": "当期純利益", "net_profit": 29.2, "net_margin": 2.12, "employees": null, "reference": "会社年鑑（1976年版）" }, { "year": 1976, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1343, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 59.1, "net_profit_jp": "当期純利益", "net_profit": 24.5, "net_margin": 1.824, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1977, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1414, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 56, "net_profit_jp": "当期純利益", "net_profit": 29.9, "net_margin": 2.114, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1978, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 1653, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 64.6, "net_profit_jp": "当期純利益", "net_profit": 26.7, "net_margin": 1.615, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1979, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2041, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 74.8, "net_profit_jp": "当期純利益", "net_profit": 30.4, "net_margin": 1.489, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1980, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2344, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 84.6, "net_profit_jp": "当期純利益", "net_profit": 34.1, "net_margin": 1.454, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1981, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2437, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 96.2, "net_profit_jp": "当期純利益", "net_profit": 41.5, "net_margin": 1.702, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1982, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2882, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 129, "net_profit_jp": "当期純利益", "net_profit": 53, "net_margin": 1.839, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1983, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 3201, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 139, "net_profit_jp": "当期純利益", "net_profit": 56.3, "net_margin": 1.758, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1984, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2761, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 119, "net_profit_jp": "当期純利益", "net_profit": 50.4, "net_margin": 1.825, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1985, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2837, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 120, "net_profit_jp": "当期純利益", "net_profit": 46, "net_margin": 1.621, "employees": null, "reference": "会社年鑑（1986年版）" }, { "year": 1986, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1987, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1988, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1989, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1990, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1991, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1992, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1993, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1994, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1995, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1996, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1997, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1998, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 1999, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 2000, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 2001, "month": 3, "company_name": "西松建設", "consolidation": "単体", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": null, "sales": null, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": null, "ordinary_profit": null, "net_profit_jp": null, "net_profit": null, "net_margin": null, "employees": null, "reference": null }, { "year": 2002, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 5165, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 124, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": -49, "net_margin": -0.949, "employees": null, "reference": null }, { "year": 2003, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 5060, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 149, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": 45, "net_margin": 0.889, "employees": null, "reference": null }, { "year": 2004, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 4461, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 79, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": -66, "net_margin": -1.48, "employees": null, "reference": null }, { "year": 2005, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 4499, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 126, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": 31, "net_margin": 0.689, "employees": null, "reference": null }, { "year": 2006, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 4491, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 94, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": 42, "net_margin": 0.935, "employees": null, "reference": null }, { "year": 2007, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 4925, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益又は経常損失(△)", "ordinary_profit": 65, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": -75, "net_margin": -1.523, "employees": null, "reference": null }, { "year": 2008, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 4327, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益又は経常損失(△)", "ordinary_profit": 35, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": -30, "net_margin": -0.694, "employees": null, "reference": null }, { "year": 2009, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 4240, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益又は経常損失(△)", "ordinary_profit": 79, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": 26, "net_margin": 0.613, "employees": null, "reference": null }, { "year": 2010, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 3968, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益又は経常損失(△)", "ordinary_profit": -64, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": -401, "net_margin": -10.106, "employees": null, "reference": null }, { "year": 2011, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2579, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益又は経常損失(△)", "ordinary_profit": 23, "net_profit_jp": "当期純利益又は当期純損失(△)", "net_profit": 14, "net_margin": 0.542, "employees": null, "reference": null }, { "year": 2012, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": "売上高", "sales": 2639, "operating_profit_jp": null, "operating_profit": null, "ordinary_profit_jp": "経常利益", "ordinary_profit": 34, "net_profit_jp": "親会社株主に帰属する当期純利益", "net_profit": 27, "net_margin": 1.023, "employees": 2560, "reference": null }, { "year": 2013, "month": 3, "company_name": "西松建設", "consolidation": "連結", "accounting_standard": "JGAAP", "unit": "億円", "sales_jp": 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