
1–2 days/week at home
Core hours 11–3
Dog friendly
Job Description
Job Description:
The AR Specialist will serve as the point of contact for AR case management for a dedicated segment client group[s]. In this role, they will coach and support Line Managers and P&O colleagues with the deployment of AR processes including [but not limited to] disciplinary, grievance, performance improvement and involuntary separation. They will resolve issues and address client needs to ensure situations are resolved fairly; objectively and in a manner that aligns with our 5 Principles and the Associate Concept.
What are we looking for?
- Ideally CIPD qualified and educated to degree level or equivalent.
- Significant experience working in Human Resources and ideally Employee Relations
- Strong communication, written and interpersonal skills; ability to work and communicate effectively with a wide range of individuals across all levels of the organization
- Strong understanding of UK employment law
- Ability to manage internal and external resources to mitigate risks to the Mars business and reputation
- Ability to handle and maintain confidential and sensitive information
- Strong consultancy and problem solving skills
- Strong conflict management skills
- Ability to work independently and own discrete areas of responsibility
- Solid experience in case management, including the use and development of case management and reporting systems.
- Confident in P&O data analytics and insight generation
- Team player with customer mindset and interpersonal skills.
- Ability to build trust and interface effectively and confidently with all levels of associates and LM’s .
- Experience of coaching managers on performance and conduct matters.
- Ability to handle and prioritize a high case load.
What will be your key responsibilities?
- Working with the AR Manager, provide advice and support to line managers; associates and P&O Business Partners on a range of AR issues including, but not limited to, performance improvement; conduct issues, grievances, sickness absence; flexible working requests and workplace concerns
- Ensure that AR investigations are conducted thoroughly; fairly and objectively and in a manner that aligns with our Five Principles; the Associate Concept and legislative requirements.
- Partner with and coach line managers on performance improvement process and documentation.
- Provide interpretation of AR policies and processes to LM’s and P&O BP’s. Make recommendations regarding policy enhancements and updates as required.
- Engage with AR Manager and AR Lead on complex, high risk situations for respective Sites/Client Groups.
- Ensure proper documentation and follow up.
- Work proactively with the AR Manager on case management levels relating to the segment[s] to ensure workloads are manageable and cases are responded to in a timely manner
- Participate in weekly case review meetings collaboratively with the rest of the UK/Ireland AR team to help with case management [volumes & distribution]; identify trends and initiate AAR’s as required
- Ensure accurate input into Service Now [SNOW] for case management as required
- Work in partnership with AR Manager to track and report on segment[s] AR trends proactively.
- Through the Service to Partnership model, and using AR data and insights, work collaboratively with P&O Business Partners to identify and drive required AR interventions.
- Develop the skill and capacity of line managers in the AR space to manage people issues effectively and independently. As required, create and deliver AR Capability programs for Line Managers and P&O Business Partners.
- Provide support as required to the AR Manager on any org change initiatives including org restructures; business transfers; changes to terms and conditions of employment etc
- Identify AR trends and best practice and partner with the AR Lead as required with appropriate actions
- Deliver against the AR Strategy and UK/Ireland Priority set – Participate in Local, Regional and Global AR projects as required.
- Assist with DSAR’s as required in collaboration with internal legal counsel; FeDs & Data Privacy teams
- Partner with Legal Counsel [internal & external] as required on employment issues
- Participate in segment SIM/SMART/LM Community calls/meetings as required
What can you expect from Mars?
- Work with over 130,000 diverse and talented Associates, all guided by the Five Principles.
- Join a purpose driven company, where we’re striving to build the world we want tomorrow, today.
- Best-in-class learning and development support from day one, including access to our in-house Mars University.
- An industry competitive salary and benefits package, including company bonus.
Mars is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability status, protected veteran status, or any other characteristic protected by law. If you need assistance or an accommodation during the application process because of a disability, it is available upon request. The company is pleased to provide such assistance, and no applicant will be penalized as a result of such a request.
Company benefits









The FlexScore® is the result of a rigorous 2-step verification of a company’s flexibility
First we assess the flexibility options Mars UK provides and then we anonymously survey a statistically significant proportion of their employees to make sure Mars UK is as flexible as they say they are. Our assessment is based on the six key elements of flexibility: location, hours, autonomy, benefits, role modelling and work-life balance.
We ask the hard questions so you don’t have to.
Working at Mars UK
Company employees
4,000 In the UK
Gender diversity (male:female)
57:43
Office locations
London, Slough, Waltham, Castle Cary, Birstall, Plymouth
Hiring Countries
United Kingdom

More roles at Mars UK
- Associate Scientist –New Material Compliance
- Global DCom Strategic Demand Director
- Global Director On Demand Delivery
- Global D-Com Enterprise Capabilities Director
- FP&A Business Partner – Mars Global Services
- Global Mars Supply Excellence Manager - Food
- Corporate Affairs Director
- Manufacturing Shift Manager
- Learning Experience Manager
- Customer Service Specialist
- Vetsource International Operations Manager
- Maintenance Data Analyst
- Supply Chain Customer Care Coordinator
- Key Account/Customer Development Management LARs
- Engineer - Electrical
- Mars U Activity Manager
- Global Packaging Strategic Sourcing Manager
- Digital Technologies Portfolio Lead - Pet Nutrition
- Global Finance Vendor Director / Senior Manager
- FP&A Business Partner (Digital)
- Learning Experience Lead
- Sustainable Packaging Procurement coordinator
- European Product Developer (Dry, Care & Treats)
- Maintenance Planner
- Mechanical Engineer - Weekends
- Electrical Engineer - Weekends
- Factory Operator
- Director, Petcare Sustainability Performance Data & Analytics
- Digital Demand Lead - Sales / RGM - Mars Wrigley
- Lead Operator – Weekends
- Operator - Weekends
- Key Account/Customer Development Management (7-8 month cover)
- Manufacturing Team Leader
- European eCom Sales Support
- Data Platform Senior Leader - Mars Wrigley
- Packaging Sustainability Impacts Manager
- Consumer Care Functional Expert
- Mechanical Engineer
- Product Senior Analyst, Customer Relationship / Product Experience
- Executive Assistant
- Global Renewable Energy Program Manager
- Global Data Product Solutions Senior Lead - RTM/MM (F/M/X)
- Petcare Global Head of Talent and EI&D
- P&O Data and Talent Lead
- Packing Operator
- Data Governance Lead
- BDS Product Senior Analyst - SCP
- Portfolio Lead and Process Expert - Petcare
- Global Graphics Systems Manager
- Data Platform Architect
- Lead Operator
- European Amazon Director
- Operator - Night shift
- Global Portfolio Director – Mars Global Services
- User Experience Manager
- Maintenance Data Analyst
- Petcare data and analytics Platform product architect
- Veterinary Field Sales Representative - Yorkshire
- Associate Specialist Quality
- Customer Experience Professional
- Director- Communications & Stakeholder Engagement
- Senior Data Lead, People & Operations Analytics
- Supply Planner
- Behaviour and Training Specialist
- Customer Service Specialist - 1 year contract
- Customer Development Manager - Convenience & High Street
- Internal Communications Manager - Learning (F/M/X)
- Reliability Technician
- VP Science & Technology
- PetCare Marketing Architect
- Controls Electrical Engineer
- Global Pet Nutrition External Communications Director
- Data Scientist Lead (F/M/X)
- Field Sales representative - Berkshire/Hampshire
- Digital Platform Architect (F/M/X)
- Finance Analytics Senior Data Scientist
- Global Data Product Lead - Finance (F/M/X)
- Digital Platform Infrastructure Architect : SAP & ERP (F/M/X)
- Senior Legal Counsel - Regulatory/Food Law (F/M/X)
- Mechanical Maintenance Technician (Days)
- Field Sales Representative - Bradford
- Field Sales Representative - Stoke on Trent
- Data Platform Engineer - SRE (F/M/X)
- Senior Data Solution Architect
- Multi Skilled Engineer
- Engineering Apprentice
- Operations Apprentice
- Global Principal Technologist/Scientist
- Veterinary Nurse Specialist
- FLT Operator
- HR Reporting Analyst/Workday (f/m/x)
- Junior IT Project Manager (F/M/X)
- Mechanical Operator
- Data Engineer
- Pet Unit Specialist
- Cloud Security Architect - Data Analytics Platform (W/M/X)
- International Benefits Specialist
- One Demand Data Analytics (ODDA) DevOps Engineer
- Procurement Excellence Lead
- Senior Data Scientist
- Data Solutions Director