Marsh McLennan

Senior HR Manager - ER Casework, 12 month FTC

United Kingdom · Hybrid · Full time

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About the role

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EmployerMarsh McLennan
LocationUnited Kingdom
Work styleHybrid
Employment typeFull time
Employer posted6 Oct 2026

Company:

Marsh

Description:

HR Manager – ER Casework - 12 month FTC

We are seeking a talented individual with strong Employee Relations experience to join our Marsh UK HR Regional Advisor team, on a 12 month fixed term contract. This is a hybrid role that has a requirement of working at least three days per week in our London office.

We will count on you to:

Under the guidance of the Lead HR Manager, independently manage Employee Relations cases from start to finish. Including investigations, performance improvement, disciplinary hearings, grievances, sickness absence, probation, harassment / discrimination, appeals and TUPE transfers. Where matters are more complex, engage with the Employee Relations CoE for advice and support.
Advise, coach and support UK People Managers across the full range of activities in the HR portfolio, including communications, change management and organisational effectiveness.
During organisational restructuring activities, coordinate necessary activity to support People Managers and affected colleagues including planning and execution of consultations with colleagues about changes affecting roles or terms of employment.
Draft and issue formal documentation, including invite letters, scripts, meeting notes, outcome letters and settlement agreements.
Peer review written documentation for the HR Manager team.
Work closely with and seek input where appropriate from CoE teams, such as Employee Relations, HR Services, Benefits, Total Reward and DEI.
Work closely with and seek input where required from People Partner colleagues.
Support and, when required, take the lead in rollout and delivery of HR programs in-region and contribute to process improvements.
Ensure that regulatory and statutory obligations are discharged locally including statutory and/or regulatory reporting requirements.
Support peers and less experienced HR Managers as required to ensure that the team delivers a consistent and high-quality service across all locations for which it is responsible.

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What you need to have:

Significant experience in managing complex Employee Relations cases from start to finish, including investigations and administration of hearings, in particular, but not limited to Grievances and Disciplinaries.
Demonstrated ability to coach People Managers effectively at every level in the business, including senior executives with varying complexity.
Exceptional writing, communication and presentation skills and attention to detail.
Thorough understanding of UK employment laws, regulation and HR processes.
Excellent interpersonal skills with the ability to forge strong relationships with colleagues in the business and in wider HR, including CoEs and People Partners.

What makes you stand out:

CIPD qualified.
Strong experience in managing complex ER cases and TUPE transfers.

Why join our team:

We help you be your best through professional development opportunities, interesting work and supportive leaders.
We foster a vibrant and inclusive culture where you can work with talented colleagues to create new solutions and have impact for colleagues, clients and communities.
Our scale enables us to provide a range of career opportunities, as well as benefits and rewards to enhance your well-being.

Marsh (NYSE: MRSH) is a global leader in risk, reinsurance and capital, people and investments, and management consulting, advising clients in 130 countries. With annual revenue of over $27 billion and more than 95,000 colleagues, Marsh helps build the confidence to thrive through the power of perspective. For more information, visit marsh.com, or follow us on LinkedIn and X.

Marsh is committed to embracing a diverse, inclusive and flexible work environment. We aim to attract and retain the best people and embrace diversity of age background, civil partnership status, disability, ethnic origin, family duties, gender orientation or expression, gender reassignment, marital status, nationality, parental status, personal or social status, political affiliation, race, religion and beliefs, sex/gender, sexual orientation or expression, skin color, or any other characteristic protected by applicable law. We are an equal opportunities employer. We are committed to providing reasonable adjustments in accordance with applicable law to any candidate with a disability to allow them to fully participate in the recruitment process. If you have a disability that may require reasonable adjustments, please contact us at reasonableaccommodations@marsh.com.

Marsh is committed to hybrid work, which includes the flexibility of working remotely and the collaboration, connections and professional development benefits of working together in the office. All Marsh colleagues are expected to be in their local office or working onsite with clients at least three days per week. Office-based teams will identify at least one “anchor day” per week on which their full team will be together in person.

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