Employee Relations Advisor

The Company Imerys is the world’s leading supplier of mineral‑based specialty solutions for the industry with €3.4 billion in revenue and 12,300 employees in 40 countries in 2025. The Group offers high value‑added and functional solutions to a wide range of industries and fast‑growing markets such as solutions for the energy transition and sustainable construction, as well as natural solutions for consumer goods.

Imerys draws on its understanding of applications, technological knowledge, and expertise in material science to deliver solutions which contribute essential properties to customers’ products and their performance. As part of its commitment to responsible development, Imerys promotes environmentally friendly products and processes in addition to supporting its customers in their decarbonisation efforts.

People & Employee Relations Advisor – UK (Multi‑site, operational environment)

Location:

St Austell, Cornwall
Salary: £32,000–£36,000
Full time, Permanent

Imerys is recruiting two People & Employee Relations Advisors to join the UK HR function, supporting operational sites across a complex, unionised environment. This is a practical, site‑focused role, suited to HR professionals with strong Employee Relations experience within industrial or safety‑critical organisations.

• Deliver end‑to‑end HR operational support across the employee lifecycle, including onboarding, contracts, changes to terms and conditions and leavers.
• Manage and support Employee Relations cases, including disciplinary, grievance, absence, performance and conduct matters.
• Lead and support investigations and formal processes, ensuring procedural compliance and accurate documentation.
• Provide practical advice and guidance to managers on policies, procedures and ER matters within a unionised environment.
• Maintain accurate HR records, ER case logs and people data within Workday and associated tracking tools.
• Support payroll processes through timely and accurate submission of people data.
• Build strong working relationships with managers, supervisors and employees across multiple operational sites.
• Contribute to continuous improvement of HR and ER processes, documentation and ways of working.
• Provide on‑site HR support and engagement, adapting to operational priorities.

• Detail‑focused, practical and confident working within a unionised, operational environment.
• Proven experience working in a unionised organisation.
• Hands‑on experience supporting and managing Employee Relations processes.
• Working knowledge of UK employment law and its practical application.
• Experience with in complex, industrial or safety‑critical environments such as mining, manufacturing, rail or similar.
• Understanding of operational realities, including shift patterns, site‑based pay structures and allowances.
• Strong organisational skills with the ability to manage workload independently.
• Process‑driven but pragmatic approach, with examples of improving HR or ER processes.
• Experience using HR systems, with Workday preferred, and confidence working with data, including Google Sheets.
• High attention to detail and clear, professional communication skills.

• CIPD Level3 or Level5 qualification, or working towards one.
• Additional Employee Relations or employment law‑focused training is desirable.

You will join a collaborative team of People & Employee Relations Advisors, sharing workload across People Operations and ER activity. Regular engagement with operational sites is essential, and the role requires a team‑focused approach. On‑site presence is required, particularly during the probation period. Hybrid working may be considered after this period, at the company’s discretion.

• Salary range £32,000–£36,000.
• 25 days’ holiday plus bank holidays.
• Generous pension plan with employee contributions of 3%–6% and employer contributions of 6%–9%.
• Group life assurance.
• Income protection.
• Private medical insurance.
• Generous company sick pay scheme.
• Enhanced family‑friendly policies.
• Cycle to Work scheme.
• Employee Assistance Programme.
• Employee discount portal.

Imerys is a global…