Sandra Busby from the Welsh Contact Centre Forum said that "even throughout the recession, this [call centre] industry has continued to grow."
She said that part of the reason for Welsh strength for call centres is communication issues experienced by customers calling overseas, and says that the new jobs are "absolutely vital" for Swansea and its economy.
More top news
A pilot project by Anglesey students to set up and run a seafood market in Menai Bridge has proved a major success.
Welsh drivers who break down face hundreds of miles of road without mobile signal the RAC has warned.
Not a promising start to the week with a Met Office yellow warning of heavy and persistent rain.