The issue could end the county's deal to move its staff to a joint venture with VT Education because of union complaints that transferred staff could lose out.
The National Association of Education Inspectors, Advisers & Consultants tabled its proposed solution at meeting with officials last week.
General secretary John Chowcat explained that teachers who move into
pension scheme and join the local government one. But in some councils this has not happened.
Although the benefits are comparable, the local government scheme can offer far more generous early retirement terms than the teachers' scheme, he said.
'There are good practical reasons for trying to sort this out,' said Mr Chowcat.
'We have a grey area for some people and there will be others.'