Sue Essex leaves Silk Commission on assembly powers
A former Welsh government finance minister is standing down as Labour's representative on an inquiry into the future of devolution.
Sue Essex leaves the Silk Commission as it prepares to publish a report on whether tax-varying powers should be devolved to Cardiff.
The commission, set up by the UK government last year, will then start the second part of its work.
Part two will ask whether changes are needed to the assembly's powers.
All four main political parties are represented on the commission, which is chaired by former assembly clerk Paul Silk.
Appointments to the panel are a matter for Welsh Secretary David Jones, although Welsh Labour is expected to nominate a successor to Ms Essex.
The former Cardiff North AM was a finance minister under previous First Minister Rhodri Morgan.
She said: "It's not any kind of a problem. We have all worked very well. You have got to commit yourself to another 15 months. I was always more interested in the finance."
The first Silk Commission report, into the financial accountability of the Welsh government, is due on 19 November.