I'm creating a website an artist who draws with pencil+paper. The artist has scans and/or prints of all the illustrations completed over several years for various clients. Many of these were for pay.
I'm wondering if it is legal for the artist to display these scanned copies on their website portfolio or if they would have to get permission from the people who commissioned each piece of work.
Is there a general principle that states artists have a right to show examples of previous work, or will this depend on the compensation agreement for each work? The artist says most of these were done for pay on verbal agreement, but that there was very rarely any contract specifying copyright details.