About Polytainers
Polytainers is a leading manufacturer of rigid plastic packaging serving the food, dairy, beverage, and consumer goods industries across North America. We combine advanced manufacturing technology with a strong commitment to quality, safety, and sustainability. Our success is driven by our people. We offer a team‑oriented work environment, opportunities for career growth, and a strong focus on safety and continuous improvement. At Polytainers, you’ll be part of a stable, growing organization where your contributions make a real impact.

Position Summary
The Warehouse Supervisor is accountable for the safe, efficient, and cost‑effective execution of all warehouse operations on their assigned shift. This role owns shift performance across safety, quality, delivery, cost, and people engagement, ensuring operational targets are consistently achieved while fostering a high‑performance, continuous improvement culture.

The Supervisor leads, coaches, and develops the warehouse team, ensures disciplined execution of processes and systems, and drives operational excellence aligned with Polytainers’ business objectives.

Key Responsibilities

Safety, Compliance & Food Safety

Act as the designated "Competent Person" on shift, ensuring full compliance with Health & Safety, HACCP, cGMP, and 5S standards

Lead incident/accident investigations, ensuring timely reporting, root cause analysis, and corrective actions

Proactively identify hazards and implement preventative measures

Conduct regular safety audits and ensure proper documentation

Ensure proper product handling, storage, and traceability to meet food safety and quality standards

Operational Performance & KPIs

Own and deliver shift performance against key metrics including:

Safety (TRIR, near misses)

On-Time In-Full (OTIF) shipping

Inventory accuracy

Picking/shipping accuracy

Labour productivity and cost

Monitor real‑time performance and take immediate action to address gaps

Ensure effective shift handovers with clear communication of issues and priorities





Escalate operational risks and issues as required

Inventory Control & Systems Execution

Ensure accurate and timely execution of all warehouse transactions in WMS/ERP systems

Lead cycle count activities and resolve inventory discrepancies through root cause analysis

Maintain high levels of inventory accuracy and system integrity

Drive discipline in scanning, tracking, and material flow processes

Labour Planning & Workforce Management

Develop and execute daily labour plans aligned with volume and operational priorities

Monitor productivity and optimize workforce utilization across functions

Manage staffing levels, including overtime and temporary labour, to meet business needs

Maintain attendance, vacation, and scheduling in Dayforce

People Leadership & Development

Lead, coach, and develop team members to build a high‑performing and engaged workforce

Ensure fair and consistent application of company policies and standards

Manage performance through regular feedback, coaching, and formal performance improvement processes

Maintain accurate documentation of performance and disciplinary actions

Identify training needs and maintain an up‑to‑date training matrix

Develop team capability through cross‑training and succession planning

Quality & Problem Solving

Ensure timely response to NCRs and quality issues

Lead structured root cause analysis (e.g., 5 Whys) and implement sustainable corrective actions

Prevent recurrence of issues through process improvements and team education

Continuous Improvement

Identify and implement opportunities to improve safety, quality, delivery, cost, and space utilization





Lead or participate in Kaizen events and CI initiatives

Track and report measurable improvements and sustain gains

Promote a culture of continuous improvement and accountability

Communication & Cross-Functional Collaboration

Lead daily and weekly team communication meetings

Communicate performance results, priorities, and expectations clearly to the team

Collaborate with Planning, Customer Service, Production, and Quality to ensure alignment and service excellence

Support urgent customer requirements and operational escalations

Operational Excellence & Housekeeping

Ensure warehouse organization, cleanliness, and visual management standards are maintained.

Conduct daily audits to ensure compliance with operational standards.

Support layout optimization and efficient material flow.

Qualifications & Experience

Post‑secondary education in Business, Supply Chain, or related field, or equivalent experience

Minimum 5 years of warehouse experience in a fast‑paced, high‑volume manufacturing environment

Minimum 2 years of supervisory experience preferred

Experience in plastics and/or food packaging industry is an asset

Strong knowledge of warehouse operations, inventory control, and material flow

Experience with WMS/ERP systems (SAP preferred)

Proficient in Microsoft Office (Excel required)

Work Environment

Combination of office and manufacturing floor environment

Regular exposure to a rapid‑paced, high‑volume production setting

This position is open to applicants legally authorized to work in Canada.

Polytainers is proud to be an Equal Employment Opportunity employer. Polytainers is committed to diversity and inclusivity in employment and welcomes applications from qualified individuals of diverse backgrounds. Polytainers is also committed to providing accommodations for people with disabilities. If you require an accommodation, we will work with you to meet your needs.

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📌 Warehouse - Warehouse & Logistics Supervisor (Ontario)
🏢 Polytainers
📍 Ontario