When a person who has contracted an occupational disease has, under the legislation of two or more Member States, pursued an activity which by its nature is likely to cause that disease, the benefits that he or his survivors may claim shall be awarded exclusively under the legislation of the last of those States whose conditions are satisfied, taking into account, where appropriate, paragraphs 2 to 5.

If, under the legislation of a Member State, the granting of benefits in respect of an occupational disease is subject to the condition that the disease inquestion was first diagnosed within its territory, such condition shall be deemed to be satisfied if the disease was first diagnosed in the territory of another Member State.

If, under the legislation of a Member State, the granting of benefits in respect of an occupational disease is subject to the condition that the disease inquestion was diagnosed within a specific time limit following cessation of the last activity which was likely to cause such a disease, the competent institution of that State, when checking the time at which such activity was pursued, shall take into account, to the extent necessary, similar activities pursued under the legislation ofany other Member State, as if they had been pursued under the legislationof the first State.

If, under the legislation of a Member State, the granting of benefits in respect of an occupational disease is subject to the condition that anactivity likely to cause the disease inquestion was pursued for a certain length of time, the competent institution of the State shall take into account, to the extent necessary, periods during which such activity was pursued under the legislation of any other Member State, as if it had beenpursued under the legislation of the first State.

In cases of sclerogenic pneumoconiosis, the cost of cash benefits, including pensions, shall be divided among the competent institutions of the Member States in whose territory the person concerned pursued anactivity likely to cause the disease. This divisionshall be carried out onthe basis of the ratio which the length of the periods of old-age insurance or residence referred to in Article 45 (1) completed under the legislationof each of the States bears to the total length of the periods of old-age insurance or residence completed under the legislation of all the States at the dates on which the benefits commenced.

The Council shall determine unanimously, on a proposal from the Commission, the occupational diseases to which the provisions of paragraph 5 shall be extended.