A new all-Wales law could better protect heads against heavy workloads. The Assembly government is consulting on plans that could put a formal duty on governors to ensure heads have a work-life balance.
Under the plans, governing bodies would also be responsible for ensuring teachers statutory rights are upheld, including dedicated planning, preparation and assessment time and limits on covering lessons. These rights were gained under the 2003 workforce deal, but teachers' unions have said some schools are unable to fulfil them.
The government is holding an inquiry into the time heads and teachers spend covering lessons following the publication of a critical report by the cross-party enterprise and learning committee in March.
It is also consulting on whether long-term supply staff should have the same professional development entitlement as permanent staff.