Assistant Manager - MDM

Job Summary: The HR Operations & Master Data Administration Specialist is responsible for accurate and timely maintenance of employee master data across HR, payroll, timekeeping, and benefits systems. This role ensures data integrity, compliance with internal policies, labor regulations, and seamless integration between systems such as ADX, WinTeam, and LISA. The position works closely with Payroll, Benefits, IT, and HR Business Partners to support the full employee lifecycle.

Key Responsibilities:

Employee Master Data Management: Perform employee master data changes including: 

oCost Center updates, compensation updates (Pay Change, Pay Rate adjustments)

oUnion Code changes (ensuring Benefits team is looped in for all union-related updates)

oOffice Location, Supervisor, Job Title changes

oJob Change, Promotion, Demotion, and Employee Transfers (Move Administration)

oUpdate and maintain Primary Job Number changes (same location and cross-location).

Employee Lifecycle Transactions: Review and process: 

oNew Hire records and Promotion validations

oActive employee returns from Leave of Absence (LOA)

oLeave of Absence (LOA), Return of Equity (ROE), and employee terminations

oReactivations and employee status changes

oManage subcontractor records and personal action requests.

Data Reconciliation & Reporting: Prepare and analyze fallout reports between: 

oADX to WinTeam, LISA to WinTeam (where applicable)

oPerform manual data entry and corrections for all identified fallouts.

oEnsure reconciliation of payroll, HR, and benefits-related data to avoid downstream issues.

Compliance & Review Activities: Conduct periodic and ad-hoc reviews including: 

oAnniversary Bonus reviews

oPay rate and job data audits

oBenefits-impacting changes tied to union code updates

oEnsure data accuracy and compliance with labor laws, union agreements, and organizational policies.

Employee Information Maintenance: Process and validate employee personal data changes: 

oAddress updates, Email and phone number changes

oDirect Deposit / Banking information updates

oSocial Insurance Number (SIN) updates

IT & Cross-Functional Coordination: Raise and manage IT service tickets related to: 

oPhone number & Email address changes/updates

oSystem access dependencies linked to employee data changes

oCollaborate with Payr oll, Benefits, HR BP’s, and IT teams to ensure seamless processing.

Required Skills & Competencies

oStrong understanding of HR operations, payroll inputs, and employee lifecycle management

oExperience with HRIS, payroll, and timekeeping systems (e.g., ADX, WinTeam, LISA or similar platforms)

oStrong analytical and reconciliation skills

Preferred Qualifications

oBachelor’s degree in human resources, Business Administration, Commerce, or a related field

o7–10 years of experience in HR Operations, Payroll Operations, or Order management