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Article 6 1. Appropriate measures shall be taken by the competent authority for vocational guidance and physical and vocational rehabilitation of children and young persons found by medical examination to be unsuited to certain types of work or to have physical handicaps or limitations. 2. The nature and extent of such measures shall be determined by the competent authority; for this purpose co-operation shall be established between the labour, health, educational and social services concerned, and effective liaison shall be maintained between these services in order to carry out such measures. 3. National laws or regulations may provide for the issue to children and young persons whose fitness for employment is not clearly determined — (a) Of temporary work permits or medical certificates valid for a limited period at the expiration of which the young worker will be required to undergo le-examination : (b) Of permits or certificates requiring special conditions of employment. Article 7 1. The employer shall be required to file and keep available to labour inspectors either the medical certificate for fitness for employment or the work permit or workbook showing that there are no medical objections to the employment as may be prescribed by national laws or regulations. 2. National laws or regulations shall determine the other methods of supervision to be adopted for ensuring the strict enforcement of this Convention. PART II. —SPECIAL PROVISIONS FOR CERTAIN COUNTRIES Article 8 1. In the case of a member the territory of which includes large areas where, by reason of the sparseness of the population or the stage of development of the area, the competent authority considers it impracticable to enforce the provisions of this Convention, the authority may exempt such areas from the application of the Convention, either generally or with such exceptions in respect of particular undertakings or occupations as it thinks fit. 2. Each member shall indicate in its first annual report upon the application of this Convention submitted under Article 22 of the Constitution of the International Labour Organization any areas in respect of which it proposes to have recourse to the provisions of the present Article, and no member shall, after the date of its first annual report, have recourse to the provisions of the present Article except in respect of areas so indicated. 3. Each member having recourse to the provisions of the present Article shall indicate in subsequent annual reports any areas in respect of which it renounces the right to have recourse to the provisions of the present Article. Article 9 1. Any member which, before the date of the adoption of the laws or regulations permitting the ratification of this Convention, had no laws or regulations concerning medical examination for fitness for employment in industry of children and young persons may, by a declaration accompanying its ratification, substitute an age lower than eighteen years, but in no case lower than sixteen years, for the age of eighteen years prescribed in At tides 2 and 3 and an age lower than twenty-one years, but in no case lower than nineteen years, for the age of twenty-one years prescribed in Article 4. 2. Any member which has made such a declaration may at any time cancel the declaration by a subsequent declaration. 3. Every member for which a declaration made in virtue of paragraph 1 of this Article is in force shall indicate each year in its annual reports upon the application of this Convention the extent to which any progress has been made with a view to the full application of the provisions of the Convention. Medical Examination of Yotjng Persons (Sea) Convention, 1921 Article 1 For the purpose of this Convention the term " vessel " includes all ships and boats, of any nature whatsoever, engaged in maritime navigation, whether publicly or privately owned; it excludes ships of war. Article 2 The employment of any child or young person under eighteen years of age on any vessel, other than vessels upon which only members of the same family are employed, shall be conditional on the production of a medical certificate attesting fitness for such work, signed by a doctor who shall be approved by the competent authority.

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