1. National laws or regulations shall make appropriate
persons, whether employers, owners, masters or other persons, as the
case may be, responsible for compliance with the measures referred
to in Article 4, paragraph 1, of this
Convention.
2. Whenever two or more employers undertake activities
simultaneously at one workplace, they shall have the duty to collaborate
in order to comply with the prescribed measures, without prejudice
to the responsibility of each employer for the health and safety of
his employees. In appropriate circumstances, the competent authority
shall prescribe general procedures for this collaboration.