The General Conference of the International Labour Organisation,

Having been convened at Geneva by the Governing Body of the International Labour Office, and having met in its 77th Session on 6 June 1990, and

Noting the provisions of international labour Conventions and Recommendations on the night work of children and young persons, and specifically the provisions in the Night Work of Young Persons (Non-Industrial Occupations) Convention and Recommendation, 1946, the Night Work of Young Persons (Industry) Convention (Revised), 1948, and the Night Work of Children and Young Persons (Agriculture) Recommendation, 1921, and

Noting the provisions of international labour Conventions and Recommendations on night work of women, and specifically the provisions in the Night Work (Women) Convention (Revised), 1948, and the Protocol of 1990 thereto, the Night Work of Women (Agriculture) Recommendation, 1921, and Paragraph 5 of the Maternity Protection Recommendation, 1952, and

Noting the provisions of the Discrimination (Employment and Occupation) Convention, 1958, and

Noting the provisions of the Maternity Protection Convention (Revised), 1952, and

Having decided upon the adoption of certain proposals with regard to night work, which is the fourth item on the agenda of the session, and

Having determined that these proposals shall take the form of an international Convention,

adopts this twenty-sixth day of June of the year one thousand nine hundred and ninety the following Convention, which may be cited as the Night Work Convention, 1990:

第一条
　この条約の適用上、
　(a)　「夜業」とは、最も代表的な使用者団体及び労働者団体と協議した上、権限のある機関によって又は労働協約によって決定される七時間以上の継続する間（午前零時から午前五時までの間を含む。）に行われるすべての労働をいう。
　(b)　「夜業労働者」とは、自己の職務のために、一定の限度を超える相当多くの時間の夜業に従事しなければならない被用者をいう。この限度は、最も代表的な使用者団体及び労働者団体と協議した上、権限のある機関によって又は労働協約によって定められる。

in English

Article 1

For the purposes of this Convention:

(a) the term night work means all work which is performed during a period of not less than seven consecutive hours, including the interval from midnight to 5 a.m., to be determined by the competent authority after consulting the most representative organisations of employers and workers or by collective agreements;

(b) the term night worker means an employed person whose work requires performance of a substantial number of hours of night work which exceeds a specified limit. This limit shall be fixed by the competent authority after consulting the most representative organisations of employers and workers or by collective agreements.

第二条
1　この条約は、農業、牧畜業、漁業、海上運送業及び内水航行の事業のために雇用される者を除くすべての被用者に適用する。
2　この条約を批准する加盟国は、この条約を限定された種類の労働者に適用することにより重要性を有する特別の問題を引き起こす場合には、関係のある代表的な使用者団体及び労働者団体と協議した上、これらの労働者を条約の適用範囲から全面的に又は部分的に除外することができる。
3　2に基づき認められる措置をとる各加盟国は、国際労働機関憲章第二十二条に基づくこの条約の適用に関する報告の中で、適用を除外された特定の労働者の種類及び適用の除外の理由を明示し、また、この条約の規定をかかる労働者に漸進的に拡大するためにとったすべての措置を記述する。

in English

Article 2

1. This Convention applies to all employed persons except those employed in agriculture, stock raising, fishing, maritime transport and inland navigation.

2. A Member which ratifies this Convention may, after consulting the representative organisations of employers and workers concerned, exclude wholly or partly from its scope limited categories of workers when the application of the Convention to them would raise special problems of a substantial nature.

3. Each Member which avails itself of the possibility afforded in paragraph 2 of this Article shall, in its reports on the application of the Convention under article 22 of the Constitution of the International Labour Organisation, indicate the particular categories of workers thus excluded and the reasons for their exclusion. It shall also describe all measures taken with a view to progressively extending the provisions of the Convention to the workers concerned.

第三条
1　夜業の性質から必要とされる夜業労働者のための特別の措置（少なくとも第四条から第十条までに定める措置を含む。）は、夜業労働者の健康を保護し、夜業労働者が家族的責任及び社会的責任を果たすことを援助し、職業上の昇進のための機会を提供し及び夜業労働者に対し適切に補償するためにとられる。この措置は、安全及び母性保護の分野においても夜業に従事するすべての労働者のためにとられる。
2　1の措置は、漸進的に適用することができる。

in English

Article 3

1. Specific measures required by the nature of night work, which shall include, as a minimum, those referred to in Articles 4 to 10, shall be taken for night workers in order to protect their health, assist them to meet their family and social responsibilities, provide opportunities for occupational advancement, and compensate them appropriately. Such measures shall also be taken in the fields of safety and maternity protection for all workers performing night work.

2. The measures referred to in paragraph 1 above may be applied progressively.
第四条
1　労働者は、次の場合には、自己の請求により、健康状態についての評価を無料で受ける権利及び自己の職務に関係する健康上の問題を減少させ又は回避する方法についての助言を受ける権利を有する。
　(a)　夜業労働者として職務に就く前
　(b)　その職務に就いている間において一定の間隔をおいている場合
　(c)　その職務に就いている間に、夜業に従事していることによって生じた健康上の問題を経験した場合
2　健康状態についての評価の結果は、夜業に不適応であると判明した場合を除くほか労働者の同意なくして本人以外の者に伝達され及びその労働者が不利となるように使用されてはならない。

in English

Article 4

1. At their request, workers shall have the right to undergo a health assessment without charge and to receive advice on how to reduce or avoid health problems associated with their work:

(a) before taking up an assignment as a night worker;

(b) at regular intervals during such an assignment;

(c) if they experience health problems during such an assignment which are not caused by factors other than the performance of night work.

2. With the exception of a finding of unfitness for night work, the findings of such assessments shall not be transmitted to others without the workers' consent and shall not be used to their detriment.

第五条
　適当な応急手当の便宜（労働者が、必要な場合には適当な手当を受けられる場所に速やかに移されることが可能となる措置を含む。）は、夜業に従事する労働者のための利用に供される。

in English

Article 5

Suitable first-aid facilities shall be made available for workers performing night work, including arrangements whereby such workers, where necessary, can be taken quickly to a place where appropriate treatment can be provided.

第六条
1　健康上の理由により夜業に不適応であると認められた夜業労働者は、実行可能なときにはいつでも、自己が適応する類似の業務に配置転換される。
2　これらの労働者は、1の業務への配置転換が実行可能でない場合には、労働すること又は雇用を確保することができない他の労働者と同一の給付を与えられる。
3　一時的に夜業に不適応であると認められた夜業労働者は、解雇又は解雇の予告について、健康上の理由により労働することができない他の労働者と同一の保護を受ける。

in English

Article 6

1. Night workers certified, for reasons of health, as unfit for night work shall be transferred, whenever practicable, to a similar job for which they are fit.

2. If transfer to such a job is not practicable, these workers shall be granted the same benefits as other workers who are unable to work or to secure employment.

3. A night worker certified as temporarily unfit for night work shall be given the same protection against dismissal or notice of dismissal as other workers who are prevented from working for reasons of health.

第七条
1　夜業に代わるものを利用できない場合には夜業に従事することが要求されるであろう女子労働者に対しては、次の期間について夜業に代わるものを利用できることを確保するための措置をとる。
　(a)　出産予定日前の少なくとも八週間を含む産前産後の少なくとも十六週の期間
　(b)　母親又は子の健康のために必要であることを明示する健康証明書が提出されている次の追加的な期間
　　(i)　妊娠中
　　(ii)　(a)に基づいて定める産後の期間を超える特定の期間。その長さについては、権限のある機関が最も代表的な使用者団体及び労働者団体と協議した上決定する。
2　1の措置には、可能な場合の昼間の労働への配置転換、社会保障給付の支給又は母性休暇の延長を含むことができる。
3　1の期間においては、
　(a)　女子労働者は、妊娠又は出産に関連しない正当な理由に基づく場合を除き、解雇され又は解雇の予告を受けない。
　(b)　女子労働者の所得は、適当な生活水準に従って本人及びその子の生活の維持に十分な水準に維持される。この所得の維持は、2に掲げる措置、他の適当な措置又はこれらの措置の組合せによって確保することができる。
　(c)　女子労働者は、通常の夜業の職務に付随する地位、先任権及び昇進の機会に関する利益を失わない。
4　この条の規定は、母性休暇に関連する保護及び利益を減少させる効果をもたない。

in English

Article 7

1. Measures shall be taken to ensure that an alternative to night work is available to women workers who would otherwise be called upon to perform such work:

(a) before and after childbirth, for a period of at least sixteen weeks of which at least eight weeks shall be before the expected date of childbirth;

(b) for additional periods in respect of which a medical certificate is produced stating that it is necessary for the health of the mother or child:

(i) during pregnancy;

(ii) during a specified time beyond the period after childbirth fixed pursuant to subparagraph (a) above, the length of which shall be determined by the competent authority after consulting the most representative organisations of employers and workers.

2. The measures referred to in paragraph 1 of this Article may include transfer to day work where this is possible, the provision of social security benefits or an extension of maternity leave.

3. During the periods referred to in paragraph 1 of this Article:

(a) a woman worker shall not be dismissed or given notice of dismissal, except for justifiable reasons not connected with pregnancy or childbirth;

(b) the income of the woman worker shall be maintained at a level sufficient for the upkeep of herself and her child in accordance with a suitable standard of living. This income maintenance may be ensured by any of the measures listed in paragraph 2 of this Article, by other appropriate measures or by a combination of these measures;

(c) a woman worker shall not lose the benefits regarding status, seniority and access to promotion which may attach to her regular night work position.

4. The provisions of this Article shall not have the effect of reducing the protection and benefits connected with maternity leave.

第八条
　労働時間、給与又は類似の給付の形態の夜業労働者に対する補償については、夜業の性質を認識したものでなければならない。

in English

Article 8

Compensation for night workers in the form of working time, pay or similar benefits shall recognise the nature of night work.

第九条
　夜業労働者及び必要がある場合には夜業に従事する労働者には、適当な社会的な便益が提供される。

in English

Article 9

Appropriate social services shall be provided for night workers and, where necessary, for workers performing night work.

第十条
1　使用者は、夜業労働者の業務を必要とする勤務計画を導入するに当たっては、必要とされる職業上の健康のための措置及び社会的な便益について並びにその勤務計画の詳細及び事業場とその従業員とに最も適する夜業の編成の形態の詳細について、関係のある労働者の代表者と協議する。夜業労働者を雇用する事業場においては、この協議を定期的に行う。
2　この条の適用上、「労働者の代表者」とは、千九百七十一年の労働者代表条約に従って、国内法又は国内慣行により認められる労働者の代表者をいう。

in English

Article 10

1. Before introducing work schedules requiring the services of night workers, the employer shall consult the workers' representatives concerned on the details of such schedules and the forms of organisation of night work that are best adapted to the establishment and its personnel as well as on the occupational health measures and social services which are required. In establishments employing night workers this consultation shall take place regularly.

2. For the purposes of this Article the workers' representatives means persons who are recognised as such by national law or practice, in accordance with the Workers' Representatives Convention, 1971.

第十一条
1　この条約の規定は、法令、労働協約、仲裁裁定、判決若しくはこれらの手段の組合せによって又は国内事情及び国内慣行に適する他の方法によって実施することができる。他の手段により実施しない場合には、この条約の規定は法令によって実施する。
2　この条約の規定を法令によって実施する場合には、最も代表的な使用者団体及び労働者団体と事前に協議する。

in English

Article 11

1. The provisions of this Convention may be implemented by laws or regulations, collective agreements, arbitration awards or court decisions, a combination of these means or in any other manner appropriate to national conditions and practice. In so far as they have not been given effect by other means, they shall be implemented by laws or regulations.

2. Where the provisions of this Convention are implemented by laws or regulations, there shall be prior consultation with the most representative organisations of employers and workers.

in English

Article 12

The formal ratifications of this Convention shall be communicated to the Director-General of the International Labour Office for registration.

第十二条〜第十九条（最終条項）
（略）
（第百五十九号条約参照）

in English

Article 13

1. This Convention shall be binding only upon those Members of the International Labour Organisation whose ratifications have been registered with the Director-General.

2. It shall come into force twelve months after the date on which the ratifications of two Members have been registered with the Director-General.

3. Thereafter, this Convention shall come into force for any Member twelve months after the date on which its ratification has been registered.

Article 14

1. A Member which has ratified this Convention may denounce it after the expiration of ten years from the date on which the Convention first comes into force, by an act communicated to the Director-General of the International Labour Office for registration. Such denunciation shall not take effect until one year after the date on which it is registered.

2. Each Member which has ratified this Convention and which does not, within the year following the expiration of the period of ten years mentioned in the preceding paragraph, exercise the right of denunciation provided for in this Article, will be bound for another period of ten years and, thereafter, may denounce this Convention at the expiration of each period of ten years under the terms provided for in this Article.

Article 15

1. The Director-General of the International Labour Office shall notify all Members of the International Labour Organisation of the registration of all ratifications and denunciations communicated to him by the Members of the Organisation.

2. When notifying the Members of the Organisation of the registration of the second ratification communicated to him, the Director-General shall draw the attention of the Members of the Organisation to the date upon which the Convention will come into force.

Article 16

The Director-General of the International Labour Office shall communicate to the Secretary-General of the United Nations for registration in accordance with Article 102 of the Charter of the United Nations full particulars of all ratifications and acts of denunciation registered by him in accordance with the provisions of the preceding Articles.

Article 17

At such times as it may consider necessary, the Governing Body of the International Labour Office shall present to the General Conference a report on the working of this Convention and shall examine the desirability of placing on the agenda of the Conference the question of its revision in whole or in part.

Article 18

1. Should the Conference adopt a new Convention revising this Convention in whole or in part, then, unless the new Convention otherwise provides:

(a) the ratification by a Member of the new revising Convention shall ipso jure involve the immediate denunciation of this Convention, notwithstanding the provisions of Article 14 above, if and when the new revising Convention shall have come into force;

(b) as from the date when the new revising Convention comes into force this Convention shall cease to be open to ratification by the Members.

2. This Convention shall in any case remain in force in its actual form and content for those Members which have ratified it but have not ratified the revising Convention.

Article 19

The English and French versions of the text of this Convention are equally authoritative.