Job Description

Senior Employee Relations Manager

Location: High Wycombe (2/3 days per week on-site)

We’re looking for an experienced Senior Employee Relations Manager to join our People Team and play a key role in delivering a high‑quality, proactive HR advisory service. If you’re confident handling complex ER matters, enjoy coaching others, and thrive in a fast‑paced environment, this role offers the chance to make a real impact.

What You’ll Do

• Act as deputy to the Head of People Advice and lead the team in their absence
• Provide expert guidance on complex ER cases, including disciplinary, grievance, performance, absence, and capability
• Advise on high‑risk matters such as whistleblowing, settlement agreements, TUPE, redundancy, and tribunal preparation
• Oversee the People Advice phone line, inbox, and business change requests
• Build strong relationships with managers and leaders across the business
• Analyse ER data to identify trends and support proactive interventions
• Mentor People Advisors and support onboarding
• Deliver ER training and contribute to policy development

What You’ll Bring

• CIPD Level 5 or equivalent experience
• Significant ER experience in a complex, fast‑paced organisation
• Experience in a unionised environment
• Strong knowledge of UK employment law
• Excellent coaching, communication, and stakeholder management skills
• High emotional intelligence and sound judgement

If you’re a confident ER specialist who enjoys leading, influencing, and driving continuous improvement, we’d love to hear from you.

Biffa – we’re changing the way people think about waste

At Biffa, we love working with waste. Whether we’re turning it into sustainable power, finding new ways to recycle it or simply keeping it off the streets, we believe every day is an opportunity to improve the lives of millions. It’s a view that’s shared by our 11,000+ people around the country, who trust us to provide them with a career that’s always rewarding, often challenging, but never dull.

We believe different ideas, perspective and backgrounds are key to developing a creative and effective working environment which is why you’ll find us championing diversity and equality at every turn.