Can an Agency Supply Cover During Strike Action?
Industrial action in the education sector creates a complex environment for school leaders and supply staff alike. When disputes between unions and the government lead to walkouts, headteachers face the difficult task of balancing the safety of pupils with the rights of their permanent workforce. For those working through an agency, the situation often brings a mix of professional uncertainty and ethical questions regarding their role during a picket line. Many educators choose why choose First Class specifically because they need an agency that provides clear guidance during these turbulent times.
Understanding the legal framework is essential for maintaining compliance and positive staff relations. While regulations have shifted in recent years, the priority for everyone involved remains the continuity of care for children and the stability of the local school community. Navigating these periods requires a clear head and an appreciation of the specific rules governing agency teachers strike action in the UK. You can stay updated on the latest developments by visiting our news section regularly.
Is It Legal for Schools to Use Agency Staff During Strikes?

The short answer is currently no. Under the Conduct of Employment Agencies and Employment Businesses Regulations 2003, specifically Regulation 7, employment agencies are prohibited from providing workers to perform the duties normally carried out by a staff member who is taking part in official industrial action. This remains a cornerstone of UK employment law designed to protect the integrity of strike action. Our commitment to these standards is reflected in the positive testimonials we receive from both schools and teachers who value our ethical approach.
There was a brief period in 2022 when the government attempted to repeal this ban, allowing schools to use agency teachers strike cover. However, this change was challenged by several trade unions and subsequently quashed by the High Court in July 2023. As it stands today, any agency providing staff to specifically cover striking workers would be acting unlawfully. Schools must be aware of this to avoid potential legal repercussions and to ensure they are following the latest DfE and NEU strike cover guidance. If you have any queries about how this affects your specific situation, please contact us today to speak with a consultant.
This does not mean that all agency work stops during a strike. If a school had a pre-existing vacancy or an agency teacher was already booked for a role unrelated to the industrial action, such as covering a long term maternity leave, that teacher can usually continue their work. The restriction specifically targets the act of breaking a strike by providing temporary staff to fill the gap left by those on the picket line. In some cases, a teacher might even be on-site but find themselves with extra time; it is helpful to know what supply teachers should do during PPA time if their normal schedule is altered by the strike.
What Are the Rights of Supply Teachers During Industrial Action?
Supply teachers often find themselves in a unique position because they are not directly employed by the school or local authority. While they are not usually part of the specific ballot that leads to a strike, they still have supply teacher rights during strikes that protect their professional standing. You cannot be forced by an agency or a school to cover the classes of a striking colleague if that request breaches the 2003 Regulations. For those looking to join our team, we offer a how to register as a supply teacher in the North East a step-by-step guide to get you started.
Many educators feel an ethical conflict when asked to work on strike days. It is important to know that you have the right to choose whether to cross a picket line, though your pay may be affected if you choose not to work a previously agreed shift. If you are unsure about a specific request, you should always check who to ask for help as a supply teacher in a new school to ensure you are not being asked to step into a role that contravenes strike rules.
For those who do work on strike days in roles that are legally permitted, it is vital to remain professional and neutral. You might find that the school environment feels different or that usual routines are disrupted. Being prepared by understanding school timetables bells and routines quickly will help you maintain a sense of normalcy for the pupils who are still in attendance. Additionally, you should be familiar with how to navigate school behaviour policies as a supply teacher as student groups may be mixed or larger than usual.
How Can Schools Manage Safely Without Breaking the Law?
School leaders in the North East often look for ways to keep their doors open for vulnerable children or exam year groups during strikes. Since the question of can schools use agency staff during strikes is answered with a firm no for direct cover, schools must look at internal alternatives. This might include using support staff who are not striking, or non-striking teachers, to supervise larger groups of pupils in a non-teaching capacity. Our role in the community is to support these schools through compliant staffing solutions.
Managing a reduced workforce requires meticulous planning around safety. Even if you have fewer staff, the duty of care does not diminish. Supply staff who are on-site for pre-planned reasons must be fully briefed on how the strike affects standard operations. It is a good time for schools to review what supply teachers should know about safeguarding on day one to ensure that even in a smaller team, every child is protected. This is particularly important so that staff know what should a supply teacher do when a pupil discloses a safeguarding concern during periods of reduced staffing.
If a school is operating with a skeleton crew, communication becomes the most valuable tool. Ensuring that all temporary staff are aware of the day’s specific arrangements is crucial. This includes knowing how to handle fire drills and emergencies as a supply teacher when the usual designated fire wardens might be absent from the building. It also helps to have a quick guide to school IT systems for supply teachers to avoid technical delays, and to know what to do if technology is not working in the classroom while IT support staff may be limited.
What Should an Agency Teacher Do if Asked to Cover a Striking Colleague?
If you are approached by a school or an agency to cover a class specifically because the regular teacher is striking, you should politely decline and cite the current agency teachers strike rules. A reputable, locally rooted agency will never ask you to put your professional reputation at risk by breaking these regulations. Your relationship with your agency should be built on trust and a shared commitment to lawful strike cover North East standards. You may also need to be careful when navigating parental communication as a supply teacher if parents ask why their usual teacher is not present.
Sometimes, the lines can feel blurred, especially if a school is struggling. If you find yourself in a classroom where you feel you are being used inappropriately, it is important to speak up. You might need to clarify your tasks, especially regarding what to do if lesson plans are missing or unclear, as striking teachers are not expected to leave work for their colleagues to deliver. It is also wise to know how to use school systems without prior training if you are moved to a different classroom at short notice, and remember to learn how to leave effective feedback for the class teacher for when they return to duty.
For those who choose to support their colleagues by not working, it is worth considering how this might impact your future bookings. Most schools respect the professional decisions of supply staff, provided communication is clear and timely. If you have already accepted a booking but now feel uncomfortable due to a strike, you should read about can supply teachers refuse a placement after accepting it to understand the best way to handle the situation professionally.
Practical Steps for Maintaining Compliance

Transparency is the best way to protect everyone during periods of unrest. Schools that prioritise the wellbeing of their staff and the legal requirements of supply teachers strike action will find it much easier to return to normal operations once the dispute is resolved.
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Review the latest government guidance on education strike regulations before the strike date.
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Ensure all agency bookings for strike days were made before the industrial action was announced or for reasons unrelated to the dispute.
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Maintain open dialogue between the school business manager and the supply agency to confirm the purpose of each temporary staff member.
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Ensure supply staff are briefed on what to expect from a supply teacher briefing at a new school regarding strike-day protocols.
Working with an agency that understands the local North East landscape ensures that these complex days are handled with the necessary care and expertise. If you are a headteacher looking for a partner that values ethics and compliance, or a teacher looking for a supportive team, you can meet the team at First Class Supply to see how we work. We pride ourselves on being a people-first agency that stays informed so you do not have to worry about the finer details of regulation.
For more specific advice on working in regional schools, take a look at our information for teachers or explore our information for schools. Whether it is navigating strike days or managing daily cover, having a trusted partner makes all the difference to the smooth running of our local classrooms.
This article is intended for general informational purposes only and does not constitute professional legal, employment, or safeguarding advice. For guidance specific to your circumstances, please consult a qualified professional or refer to current Department for Education guidance.


