Russell Goodway, the cabinet member for economy on Cardiff Council, told ITV Cymru Wales' Sharp End programme that Wales' largest local authority would also be struggling to balance the books after cuts to funding in the Welsh Government's Draft Budget.
He said: "We employ 10,000 full-time equivalent, excluding teachers. I doubt by the time we get to 2017 that half of those people will be working for the council."
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A chilly night with winter showers in the west and widespread frost and ice in places.
The former Siop Y Werin faces demolition as part of council plans to regenerate the town centre.