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.
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Two people have died after being involved in separate lightning strikes in Wales' Brecon Beacons today.
Any lingering showers will ease this evening, to leave a dry night with plenty of clear spells. Minimum temperature 11 deg C (52 deg F).
Blackwood mother Trudy Jones was on holiday when she was gunned down in the Tunisian beach massacre that claimed the lives of 30 Britons.