Grievance and Investigation Training
Practical, solicitor-led training to help managers and HR teams handle employee complaints, investigations and sensitive workplace issues.
Helping managers respond confidently to grievances and workplace concerns.
Grievances and workplace complaints can be disruptive, sensitive and legally complex. Whether it’s an informal concern or a formal written grievance, managers often feel unsure about how to respond. Add in the pressure of a workplace investigation – with tight timescales and potential legal implications – and the risks quickly increase.
At Thomas Mansfield Solicitors, we provide grievance and investigation training that equips HR professionals and line managers with the knowledge and tools to act lawfully, fairly and consistently.
Led by employment law solicitors with real-world experience, our training combines legal insight with practical strategies to manage grievances effectively and carry out investigations that stand up to scrutiny.
Why disciplinary and grievance training matters
Without clear procedures and confident people to apply them, workplace concerns can quickly escalate. Grievances that are poorly handled – or ignored – can lead to loss of trust, higher staff turnover, formal disputes or even employment tribunal claims.
Training ensures that your teams understand:
- When and how to escalate complaints appropriately.
- What a fair, lawful investigation process looks like.
- The importance of consistency and procedural compliance.
- How to document concerns and decisions clearly.
- How to reduce the risk of discrimination, victimisation or unfair treatment.
Effective grievance handling supports a positive culture and helps protect your business from avoidable legal and reputational risk.
…highly experienced and knowledgeable in complex domestic UK and International employment law matters. If you are looking for a law firm to represent domestic and complex cross-international matters, look no further than Thomas Mansfield.
Legal 500, 2025
Call our employment law team on 020 4579 5997 or
What our grievance and investigation training covers.
Our sessions are shaped around your policies and risk areas, but typically explore:
- The legal framework – Including employee rights and the Acas Code of Practice.
- Grievance procedures – Roles, responsibilities and timelines.
- Workplace investigations – Planning, interviewing and evidence gathering.
- Documenting findings – Reaching decisions that withstand challenge.
- Managing difficult or sensitive complaints – Including bullying, discrimination and whistleblowing.
- Common pitfalls – What can go wrong and how to avoid it.
We use case studies and real-life scenarios to bring learning to life – and can include role-play to help your teams practise challenging conversations in a safe environment.
Meet our employment law partners
Why train with Thomas Mansfield Solicitors.
We’re employment law specialists who work day in, day out with HR teams and managers facing grievance issues. That experience shapes every session we deliver.
When you train with us, you get:
- Solicitor-led delivery – Your session is delivered by an experienced employment lawyer. We bring first-hand knowledge of how grievance issues play out in real workplaces – and how to manage them effectively.
- Practical, business-focused guidance – We don’t just explain the law – we show how to apply it in the context of your organisation, sector and internal procedures.
- Tailored content – Whether you’re in professional services, transport and logistics, healthcare or another sector, we adapt our training to reflect your challenges, workforce and risk profile.
- Credibility and quality – We’re recognised in The Legal 500, accredited by Lexcel for excellence in legal practice, and members of the Employment Lawyers Association.
- Flexible, engaging delivery – Whether delivered remotely or in person, our training is interactive, jargon-free and easy to engage with.
Equip your managers with the skills to manage workplace complaints the right way
Whether you’re dealing with frequent employee issues or want to strengthen internal capability, our solicitor-led training helps your managers handle grievances with confidence.
Get in touch to discuss your training needs – we’ll tailor a session around your team, policies and goals.
Call our employment law team on 020 4579 5997 or
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Ready to train your team the right way?
Use our form or call us to speak with an experienced solicitor about training for your business or team.