About the role:

We are seeking an experienced part-time HR Manager to join Mars The Label. As the business continues to scale, we are looking for an experienced HR Manager to establish and lead our HR function from the ground up.

This is an exciting opportunity for an experienced and enthusiastic HR professional who enjoys building functions and processes, working closely with Founder, Directors, and leadership, and creating a best-in-class people infrastructure needed to support a fast-growing and people-focused fashion business.

You will establish the foundations of our people function, putting the right policies, processes, and practices in place while also being a highly visible and approachable point of contact for our team.

Working closely with the Founder and management team, you will provide expert guidance across the full employee function including recruitment and onboarding through to performance, career development, and employee relations. You will be responsible for ensuring the business has appropriate HR practices, policies, and processes in place and remains compliant as we continue to grow.

Key responsibilities:

• Establish the HR function and create scalable processes, policies, and systems from the ground up.
• Develop and implement a comprehensive HR framework appropriate for a growing people-focused fashion business.
• Introduce clear and legally compliant HR policies, procedures, and employee documentation.
• Establish consistent processes across recruitment, onboarding, probation, performance, absence, and development.
• Ensure employee records and HR documentation are accurate, organized, and appropriately managed including contracts, policies, processes, and employee documentation are appropriately maintained.
• Introduce HR systems and tools that improve efficiency as the business grows.
• Maintain strong knowledge of and ensure compliance with UK employment law and HR best practice while keeping the Founder, Directors, and Senior Leadership team informed of relevant changes to employment legislation.
• Provide support and practical advice to Founders and managers on employment queries and issues.
• Manage disciplinary, grievance, absence, performance, and other employee relations matters fairly and consistently.
• Work with external HR, employment law, or legal advisers where specialist support is required.
• Own the end-to-end recruitment process across the business. Work with hiring managers to define roles, responsibilities, and talent requirements.
• Develop job descriptions and effective recruitment processes.
• Manage candidate sourcing, interviews, offers, and pre-employment processes and build a strong and consistent onboarding experience.
• Work closely with the Founder and Directors to develop Mars The Label employer proposition as the business grows to be one of the best in the UK.
• Act as the primary HR contact for employees and managers, provide trusted, confidential, and commercially appropriate HR advice.
• Manage employee relations queries and issues from initial concern through to resolution.
• Help define and embed a strong people culture aligned with the Mars The Label brand and employment brand.
• Develop initiatives that support staff engagement, wellbeing, and retention.
• Manage contracts, amendments, probation reviews, holiday, absence, and other HR administration.
• Work closely with Finance/payroll providers to ensure accurate payroll information.
• Maintain confidentiality and appropriate handling of sensitive employee information.
• Develop clear reporting and HR metrics for the leadership team.