Human Resources Lead, M&A Integration

Toronto, ON
Hybrid
Posted Sep 2, 2026
1 position

$70,000–$110,000 / year

Opens an external site

Employment type: Full-time
Experience level: Senior · 5+ years
Minimum education: Professional degree
Posting language: English
Working hours: 40 hours per week
Office presence: 4 days per week

Job summary

The HR Lead is responsible for managing the human resources components of acquisitions, from initial due diligence to post-close integration. This role involves developing integration playbooks, harmonizing compensation and benefits, and ensuring a seamless transition for employees.

Job details

This is a hybrid position based out of North York @ 243 Consumers Rd (near hwy. 404 and hwy. 401) - You will work 4 days per week in office and 1 day remote. Lifemark Health Group (LHG) is a market leader in customized healthcare solutions. With over 20 years of service excellence, LHG is one of the largest, most trusted, and most comprehensive providers in Canada. As a national healthcare company, LHG employs over 5,000 highly trained clinicians, medical experts and team members in over 300 locations coast-to-coast and continues to grow both organically as well as through acquisitions. With that growth, is a vision to be the most innovative healthcare providers in community rehabilitation, workplace health and wellness and medical assessment services. Lifemark was acquired by Loblaw Companies on May 10, 2022. The Human Resources Lead, M&A Integration is responsible for leading the HR components of acquisitions from due diligence through to post-close integration. This role partners closely with Corporate Development, Finance, Legal, and business leaders to assess workforce risks, design integration plans, and ensure a smooth transition for employees into the organization. Reporting to the Director, Human Resources, the HR lead will build and execute repeatable integration playbooks, standardize HR practices across acquired entities, and support the harmonization of compensation, benefits, employment structures, and HR systems. This role is critical in ensuring acquisitions are integrated efficiently, compliantly, and with a strong focus on employee experience. Your Key Responsibilities will include: HR Due Diligence * You will lead the HR due diligence for acquisitions, including: * Workforce composition * Compensation and benefits structures * Employment agreements and contractor arrangements * Organizational design and reporting structures * Key talent identification and retention risks * Assess Financial and Operational impacts of Workforce Harmonization. * Prepare HR due diligence reports and risk summaries for executive leadership. Integration Planning * You will develop HR integration plans aligned with deal timelines and business objectives. * Design harmonization strategies for: * Compensation and pay structures * Benefits and leave programs * Employment agreements * Job classifications and titles * Define integration timelines, milestones, and ownership across HR functions. Post-Close Integration * You will execute HR integration activities, including: * Employee onboarding into core HR systems * Contract and agreement transitions * Benefits alignment * Policy and process harmonization * Coordinate with HR Shared Services, Payroll, IT, and regional teams to ensure smooth transitions. * Monitor integration progress and escalate risks or issues as needed. Employee Experience & Communications * You will support the development of acquisition-related employee communications and materials. * Provide guidance to leaders on: * Compensation and benefits changes * Organizational changes * Employee concerns and retention strategies * Ensure a consistent and positive employee experience during transitions. Playbook & Process Development * You will Build and Maintain a Standardized HR M&A integration playbook. * Develop templates and tools, including: * Due diligence checklists * Harmonization trackers * Employment agreement templates * Post-close integration checklists * Identify opportunities to streamline and automate integration processes. Stakeholder Partnership * You will partner with: * Corporate Development teams on deal planning * Finance on cost modeling and synergies * Legal on employment and compliance matters * HR Business Partners on local integration support * Act as the central HR point of contact for acquisition-related initiatives. What we're looking for: * Post-Secondary Education in Human Resources, Business, or related field. * 5–8+ years of progressive HR experience. * CHRP or equivalent HR certification preferred. * Experience leading HR activities for Mergers & Acquisitions a plus * Experience leading presentations and developing presentation materials * Experience in multi-site or high-growth environments preferred. * Program Management experience a plus Lifemark welcomes and encourages applications from people with disabilities. Accommodations are available on request for candidates taking part in all aspects of the selection process. Lifemark promotes equal employment opportunities for all job applicants, including those self-identifying as a member of the following groups: Indigenous peoples, Newcomers to Canada, and Visible minorities. Accommodation Accommodations are available on request for all candidates taking part in any aspect of the recruitment and selection process. Email us at talent at lifemark.ca #LI-NC1

What you’ll do

Requirements

Candidates must have 5-8+ years of progressive HR experience and a post-secondary education in Human Resources or a related field. Experience leading HR activities for mergers and acquisitions is considered a significant asset.