HR Advisor

We design, implement and optimize breakthrough content production models, delivering simplicity, efficiencies, and the connectivity and consistency of content that powers brand growth. Our flexible models combine content experience, production solutions, and global delivery. We bring ideas to life in all mediums, all channels and all stages of the production process. We multiply and lead with innovative technologies including real-time 3D, virtual production, automation and generative content.

Born from the leading creative and media agencies and engineered for a data‑driven world, we provide scaled content solutions, industry‑leading content development, production excellence and unmatched global delivery capabilities. You won’t find a more diverse set of clients or projects. We work in every medium in every market. You’ll deepen your expertise while stretching in new directions—with support. We believe building a community that fosters growth, belonging, and connection is as rewarding as the work itself. Come for the work. Stay for the people.

Location: London

Contract Type: Fixed‑Term Contract

Contract Length: 6 months, with possibility to extend and/or convert to permanent employee

Reports to: Head of HR

JOB SUMMARY: We’re looking for an experienced HR Advisor to join OP London on a 6‑month fixed‑term contract. This role is a key part of the HR team, providing practical, people‑focused guidance across the full employee lifecycle. You’ll act as a trusted advisor to employees and managers, offering fair, consistent, and legally compliant HR advice across employee relations, performance management, payroll, benefits, and learning & development. This is a hands‑on role suited to someone confident operating in a fast‑paced, collaborative environment.

RESPONSIBILITIES

• HR Advice & Employee Support
  • Act as a first point of contact for employee and manager HR queries, providing fair, timely, and practical guidance.
  • Advise managers on day‑to‑day people management, including navigating sensitive or challenging conversations.
  • Support performance management processes, including goal setting, development planning, and role clarity.
  • Support employees through family leave processes, ensuring clarity, consistency, and a positive experience before and after leave.
  • Proactively support employee wellbeing and mental health initiatives.
  • Manage medical leave cases and Occupational Health referrals, escalating where appropriate.
  • Partner with Operations to ensure compliance with health and safety requirements.
  • Plan and deliver employee engagement initiatives and learning sessions.
  • Stay up to date with UK employment law and HR best practice.
  • Manage and coordinate monthly payroll processes, ensuring accuracy and timeliness.
  • Partner with Finance and payroll teams on reporting and reconciliation.
  • Maintain and administer employee benefits, including enrolments, changes, and audits.
  • Communicate benefits clearly and support employees in understanding their entitlements.
• Employee Relations
  • Manage employee relations matters including performance improvement plans, probation outcomes, and conduct concerns.
  • Partner closely with senior HR leaders on complex or sensitive cases.
  • Support organisational change initiatives, including restructures and redundancy consultation processes.
• Compliance, Reporting & Processes
  • Ensure ongoing compliance with UK employment law and internal policies.
  • Support internal and external audits and people‑related reporting.
  • Oversee processes related to right‑to‑work and migrant worker compliance.
  • Contribute to the development and improvement of HR policies and procedures.
• Onboarding, Off‑boarding & HR Operations
  • Deliver HR inductions for new starters and support a positive onboarding experience.
  • Issue offer letters and employment contracts.
  • Manage onboarding and off‑boarding processes, including exit interviews and insight‑led recommendations.
  • Support freelancer and contractor processes, including right‑to‑work checks and compliance requirements.
  • Maintain accurate HR systems and employee records.
• Learning & Development
  • Support the delivery of learning and development initiatives for managers and employees.
  • Ensure completion of mandatory training requirements.
  • Support apprenticeship programmes and early talent initiatives.

REQUIREMENTS

• Proven experience in a generalist HR Advisor or similar role, ideally within advertising, media, or a similar creative industry.
• Strong knowledge of UK employment law.
• Confident managing employee relations matters with empathy and consistency.
• Comfortable balancing advisory work with operational delivery.
• Highly organised, detail‑oriented, and proactive.
• Strong interpersonal skills with a collaborative, people‑first approach.
• Embodies our values of Excellence, Changemaking & Togetherness.