Artikel 4

1. In the case of the Kingdom of the Netherlands the competent institutions with regard to the branches of social insurance referred to in:
a) Article 2 a) (i)-(iii) shall be the ``Landelijk instituut sociale verzekeringen" (National Institute for Social Insurance) c/o Gak Nederland bv;
b) Article 2 a) (iv)-(vi) shall be the ``Sociale Verzekeringsbank" (Social Insurance Bank); or
c) any body authorized to perform any functions at present exercised by the said institutions.
2. In the case of the Republic of South Africa the competent institutions to enforce the conditions of this Agreement shall be:
a) the national Department of Social Development;
b) provincial Departments of Welfare;
c) the Department of Transport;
d) the Department of Labour;
e) the National Treasury; or
f) any body authorized to perform any functions at present exercised by the said institutions.