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労働基準法第39条

Annual Paid Leave

年次有給休暇

Plain-language explanation

Article 39 of the Labor Standards Act requires employers to grant paid annual leave to employees who have worked continuously for six months and attended at least 80% of scheduled working days. Eligible employees receive 10 days of paid leave initially, with the number of days increasing based on years of continuous service. Part-time or reduced-schedule workers are also entitled to a proportional (pro-rata) amount of paid leave based on their working days.

A critical compliance point is that employers are legally obligated to ensure employees actually take at least 5 days of paid leave per year — even if the employee does not request it themselves, the employer must designate specific dates for leave-taking. Failure to comply with this "5-day mandatory leave" rule can result in corrective guidance from labor authorities or penalties. Employers are strongly advised to maintain a paid leave management ledger to track usage and ensure compliance.

Common friction points include handling unused leave upon resignation, the two-year expiration (carry-over) rule for unused leave, and the general prohibition on "buying out" leave instead of granting time off. Business owners — especially at small and medium-sized companies — should clearly document leave policies in work rules (shugyo kisoku), train HR staff, and consider using attendance management software or consulting a labor and social security attorney (shakai hoken roumushi) to avoid disputes and regulatory risk.

日本語での解説

労働基準法第39条は、労働者に一定の要件を満たした場合に年次有給休暇を与えることを使用者に義務付ける規定です。雇入れの日から6か月間継続勤務し、全労働日の8割以上出勤した労働者には10日の有給休暇が発生し、その後勤続年数に応じて休暇日数が増加していきます。パートタイマーなど所定労働日数が少ない労働者についても、比例的に有給休暇が付与される仕組み(比例付与)があります。

注意すべき点として、年5日以上の年次有給休暇を取得させることは使用者の義務であり、労働者が自ら申し出ない場合でも、使用者は時季を指定して取得させなければなりません(いわゆる「5日取得義務」)。この義務を怠ると是正指導や罰則の対象となる可能性があります。実務上、有給休暇の管理台帳(年次有給休暇管理簿)を作成し、取得状況を記録・管理することが強く推奨されます。

なお、退職や休職に伴う有給休暇の取扱い、繰越(2年間の時効)、買取りの原則禁止など、実務上トラブルになりやすい論点も多く含まれるため、就業規則への明記や労務担当者への周知が重要です。中小企業の経営者は特に、勤怠管理システムの導入や社労士への相談を通じて、法令遵守と労務トラブル予防を図ることが望まれます。

Common scenarios

  • ▸新入社員が入社6か月後に有給休暇を取得できるかどうかを確認するケース
  • ▸パートタイム従業員に対する有給休暇の比例付与日数を計算するケース
  • ▸年5日の有給休暇取得義務を満たすため、会社が計画的に休暇取得日を指定するケース
  • ▸退職時に未消化の有給休暇の買い取りや消化について労使間で協議するケース
  • ▸労働基準監督署の調査で有給休暇管理簿の提出を求められるケース

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