by political editor Paul Francis

Kent County Council is under further pressure over the news that its managing director is to quit and is reported to be walking away with a six-figure payoff.

Unison said reports that Katherine Kerswell is in line for a settlement worth £450,000 were a smack in the face for its staff and demoralising at a time when hundreds of lower paid staff had lost their jobs at County Hall.

KCC finally confirmed that Katherine Kerswell will leave this month after weeks denying that it had any plans to axe her post - despite mounting rumour and speculation.

Mrs Kerswell, who has not been at her desk for the best part of a month, is only 16 months into a four-year contract.

Unison branch secretary David Lloyd said: "It is demoralising for our members to see this at a time when they are struggling to save their own jobs and would never get anywhere near this kind of payout even if they had worked for 20 years or more. It really is a smack in the face," he said.

Opposition parties said it was disgraceful that taxpayers were being kept in the dark over how much she will walk away with. They also raised questions about why she was receiving any payout if she was resigning.

KCC says it has signed a confidential agreement, meaning it cannot say what the terms of the settlement are. However, some details will have to be published next year when the authority publishes its annual accounts as part of new government transparency regulations.

Labour opposition leader Cllr Gordon Cowan said: "This is public money and after all, it will be taxpayers’ who fund this. KCC should be upfront and say exactly how much she is getting. It will have to come out at some point but they should say so immediately."

Liberal Democrat spokesman Cllr Tim Prater echoed: "From the statement the council has put out, it reads like she has resigned. If she did, why is she being paid off at all? That is the question every taxpayer in Kent deserves an answer to."

Mrs Kerswell joined the county council in March 2010 from Northamptonshire county council following the departure of former chief executive Peter Gilroy.

A statement released by KCC said: "Katherine Kerswell has done an exceptional job at Kent reshaping our approach to service delivery and recasting our overall management arrangements.

"She is a first-rate public servant with tremendous skills at making large organisations work well. Her management direction has helped produce very significant savings to the council and confirmed Kent’s position as a leading authority."