(1) Author’s economic rights to a joint work may not be exercised without the unanimous agreement of all the holders of author’s economic rights, and no holder of author’s economic rights shall be entitled to transfer by assignment or pledge his or her share of author’s economic rights without the consent of the other authors. In such cases, each holder may not prevent the agreement from being reached or refuse the consent in bad faith.
(2) The profit accruing from the exploitation of a joint work may be apportioned among authors according to the degrees of contribution by each author, unless otherwise stipulated. In such cases, if the degree of each contribution is not clear, the profit may be equally apportioned to all the authors.
(3) The holder of author’s economic rights to a joint work may renounce his or her share. In cases of renunciation or death of a holder of author’s economic rights without heir, his or her share may be apportioned among other authors according to the ratio of their holding shares.
(4) The provisions of Article 15(2) and (3) shall apply mutatis mutandis to the exercise of author’s economic rights to a joint work.