Firstsource has confirmed that 300 of the jobs it's proposing to axe are permanent positions.
In all, 542 jobs are at risk. The remainder are contract roles.
The firm has also confirmed that the job losses will be spread evenly across two sites: its Massey Road operation at Barclaycard's offices in Thornaby, and at its own base at Fountain Court in Middlesbrough.
The job losses are in response to falling demand for Payment Protection Insurance claims handling from Firstsource's client, Barclaycard.
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Kerrie brings you Saturday night's forecast
Airline fees for services such as name changes and airport check-in could be targeted under a new Government clampdown.
Improving from the north on Saturday. A better day overall on Sunday after overnight frost & fog clears