Human Resources Manager

Cosmo5; Montreal (administrative region); On-site; CAD 60,000 - 80,000; Part time

Job summary

Cosmo5 is seeking a part-time Human Resources Manager to support Canadian and U.S. teams during a 15-month contract. The successful candidate will manage employee relations, benefits administration, and HR operations.

Seamlessly integrating into our diverse culture, the HR Manager will lead initiatives that promote employee engagement and wellbeing. Ideal applicants should possess 5+ years of HR experience and be proficient in both English and French.

Qualifications

• Minimum 5 years of progressive HR experience with significant employee relations.
• Experience in benefits administration and leave management.
• Strong organizational and time-management skills.

Responsibilities

• Serve as primary HR contact for Canadian and U.S. teams.
• Administer group insurance and retirement savings plans.
• Support recruitment coordination and onboarding activities.

Skills

Employee relations

Conflict resolution

Coaching

Bilingual (English and French)

Analytical skills

HRIS systems proficiency

Education

Bachelor’s degree in Human Resources or related field

Tools

Google Workspace

Microsoft Office

Job description

QUI SOMMES-NOUS

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HUMAN RESOURCES MANAGER (PART-TIME, 20 to 24 HOURS/WEEK) – 15-MONTH CONTRACT

WHO WE ARE

Cosmo5 is a global digital growth partner helping brands accelerate performance through Media, Commerce, Creative, Data, and Technology. With a presence in 18 countries and more than 1,000 experts worldwide, we partner with leading brands to deliver measurable business impact through innovative, data-driven strategies.

Our clients include some of the world's most recognized brands, including LVMH, L’Oréal, Carrefour, Dior, Christie’s, Warner Bros., Club Med, Rail Europe, Rudsak, and many more.

At Cosmo5, we believe business performance and employee success go hand in hand. We are committed to creating an environment where employees feel supported, valued, and empowered to grow.

THE OPPORTUNITY

Reporting to the CEO, Americas, the Human Resources Manager will serve as the primary HR partner for our Canadian and U.S. teams during a 15-month contract.

This part-time role (20 hours per week) is responsible for employee relations, benefits administration, HR operations, compliance, and manager support. The successful candidate will also oversee the HR Assistant and support the effective delivery of HR services.

KEY RESPONSIBILITIES

Employee Relations & HR Partnership (50%)

• Serve as the primary HR contact for employees and managers across Canada and the United States.
• Provide guidance on employee relations, performance management, workplace concerns, conflict resolution, investigations, and policy interpretation.
• Lead workplace investigations, disciplinary processes, performance improvement plans, and employee relations initiatives.
• Manage accommodations, leaves of absence, disability cases, return-to-work programs, and related documentation.
• Maintain knowledge of employment legislation and HR best practices across Canada, particularly in Quebec and Ontario.
• Support employee engagement, inclusion, wellbeing, and workplace culture initiatives.
• Partner with leadership to address employee relations risks.

Benefits, Insurance & HR Administration (30%)

• Administer group insurance, retirement savings plans, wellness initiatives, and leave programs.
• Act as the primary liaison with benefits, payroll, and external HR partners.
• Manage short-term disability, long-term disability, parental leave, and other leave administration processes.
• Coordinate immigration and work authorization processes as required.

HR Operations & Team Support (20%)

• Provide guidance and oversight to the HR Assistant.
• Support recruitment coordination, onboarding, and offboarding activities.
• Lead HR projects related to compliance, employee experience, and process improvement.

WHAT YOU BRING

• Strong employee relations, conflict resolution, and coaching skills.
• Ability to build trusted relationships with employees and leaders.
• Sound judgment and discretion when handling confidential information.
• Strong organizational and time-management skills.
• Bilingual in English and French (spoken and written) preferred.
• Strong knowledge of employment legislation and HR best practices.
• Strong analytical, problem-solving, and decision-making abilities.
• Ability to manage competing priorities.
• Proficiency with HRIS systems, Google Workspace, and Microsoft Office.

EDUCATION & EXPERIENCE

• Bachelor’s degree in Human Resources, Industrial Relations, Business Administration, or a related field.
• Minimum 5 years of progressive HR experience, including significant employee relations experience.
• Experience administering benefits, disability programs, and leave management.
• Experience supporting managers through performance management, investigations, and complex employee relations matters.

OUR COMMITMENT TO DIVERSITY, EQUITY & INCLUSION

At Cosmo5, we believe diverse perspectives drive stronger ideas, better collaboration, and greater innovation. We are committed to creating an inclusive workplace where every employee feels respected, valued, and empowered to succeed.

We welcome applications from candidates of all backgrounds and provide accommodations throughout the recruitment process in accordance with applicable human rights and accessibility legislation.