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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Heavy rain likely across some of the hills and western slopes in particular.
Kyle Vaughan was last seen on 30th December 2012. His parents Alan and Mary say all they want for Christmas is to lay him to rest.
People in Wales are being forced to take temporary work as there are too few permanent jobs being created, according to Wales TUC.