Senior HR Business Partner

Location: Markham, ON [Hybrid – Min 3 days per week in office]

Reports to: HR Director

Travel: within GTA occasional (10%)

Employment type: Full‑time

Build your career at Black & McDonald

Black & McDonald is an integrated, multi‑trade service provider delivering high‑quality construction, facilities management, and technical solutions across North America. With 100 years of diverse market experience, we’re a forward‑thinking organization with a strong track record of operational excellence and customer‑focused solutions that stand the test of time.

The Opportunity

We’re seeking a Senior HR Business Partner to support our operations with a mix of day‑to‑day HR delivery and strategic involvement. You’ll partner with operational leaders, coach supervisors and managers, lead investigations, drive engagement along with the other HR responsibilities that keep the lights on (employee questions, letters, onboarding/offboarding etc.). You’ll also support labour relations where applicable; including grievance handling, arbitration prep, and collective bargaining in partnership with leadership and Corporate People Resources.

What You’ll Do

Business partnering & employee relations

• Serve as a trusted advisor to leaders and supervisors on performance, coaching, organizational changes, and conflict resolution; lead workplace investigations and facilitate corrective outcomes, coordinating with Corporate People Resources as needed.
• Guide managers through progressive discipline, termination planning, and documentation in accordance with company policy and applicable legislation.
  
  

Labour relations (unionized environments)

• Act as a point of contact for day‑to‑day union matters; including grievance handling, settlements, and prep for mediations/arbitrations.
• Participate in collective bargaining (where applicable): including proposal development, costing, bargaining table support, and implementation/education of new CBA provisions.
• Interpret CBAs and coach leaders on application; participate in labour relations council meetings
  
  

Talent acquisition & development

• Own full‑cycle recruitment for designated roles (intake, postings, screening, interviews, selection and offers); craft compelling postings and ensure a great candidate experience. Expectation would be recruitment for 4-6 jobs at any given time.
• Support individualized development planning, succession insights, and targeted development for high‑potential talent.
  
  

Programs, engagement & culture

• Coordinate the annual employee engagement survey, focus groups, action plans, and follow‑through on commitments; enable local engagement initiatives and recognition programs.
• Facilitate HR updates at regional meetings as needed.
  
  

HR operations

• Communicate and train on performance management processes (goal setting, feedback, reviews).
• Own your admin: HRIS transactions and data integrity; letters (offers, changes, discipline), file management, onboarding/offboarding tasks, benefits enrollments/changes/business correspondence.
  
  

Compliance & risk

• Ensure compliance with Employment Standards, Human Rights, OHSA, and other applicable legislation; prepare for and support audits.
• Support on more complex leave/absence administration in line with policy and insurer requirements (e.g., STD/LTD coordination).
  
  

What you’ll bring

• 7–10+ years progressive HR experience, including labour relations (grievances and bargaining) in unionized environments.
• Strong track record in employee relations and workplace investigations.
• Demonstrated ability to be both strategic and hands‑on, self‑sufficient with HR admin and HRIS.
• Proficiency with Microsoft 365 (Word, Excel, PowerPoint, Outlook); HRIS experience an asset.
• Post‑secondary education in HR/Business (CHRP/CHRL an asset).
• Excellent communication, relationship‑building, prioritization, and change agility in a fast‑paced, matrixed setting.
  
  

Work conditions & other information

• Occasional travel to sites local to the GTA as required.
• A Criminal Background Check and Professional References will form part of the selection process; candidates must be legally entitled to work in Canada.
  
  

Black & McDonald welcomes and encourages applications from people with disabilities. Accommodations are available upon request for candidates taking part in all aspects of the recruitment and selection process.