Office Administrator Jobs in Mississauga, ON

Office Manager

North York, ON
onsite
Permanent
70000 - 100000 CAD / Yearly
We are looking for a highly organized and dependable Office Coordinator to support daily executive and office operations for a busy real estate brokerage in North York, Ontario. This position suits someone who can stay ahead of priorities, coordinate multiple activities at once, and maintain a careful and composed presence when dealing with confidential matters. The successful candidate will help streamline schedules, communications, documentation, and administrative processes so leadership can remain focused on business goals and client relationships. Responsibilities:• Oversee complex scheduling for senior leadership, evaluate incoming meeting requests, and adjust calendars to accommodate shifting priorities.• Organize meetings with staff, clients, and external contacts by confirming logistics, preparing materials, and ensuring all participants are well informed.• Review incoming messages and correspondence, prepare thoughtful responses when appropriate, and bring urgent items to leadership attention.• Maintain clear tracking of deadlines, follow-ups, and outstanding commitments to support consistent execution of business priorities.• Create, edit, and proofread presentations, reports, contracts, and other business documents with a high level of accuracy.• Coordinate travel arrangements, including itineraries, bookings, and supporting documentation for business-related trips.• Process invoices and expense submissions while keeping administrative records, files, and documentation up to date and well organized.• Support the planning and execution of leadership sessions, company functions, and client-facing events.• Contribute to special projects and recommend practical improvements that enhance office efficiency and administrative workflows.• Handle sensitive business information with discretion and care at all times.
2026-10-02T00:00:00Z

Administrative Assistant

Waterloo, ON
onsite
Permanent
70000 - 100000 CAD / Yearly
We are hiring a Senior Administrative Assistant to support a well-established and highly successful Investment Advisory practice. The Senior Administrative Assistant is responsible for managing the full spectrum of client account administration, transaction processing, account transfers, and regulatory documentation within this high-volume Investment Advisory practice. This is a key position, the operational backbone of the practice and requires extensive experience supporting Investment Advisors, managing client accounts, processing investment transactions, and ensuring regulatory compliance.The successful candidate will be a seasoned financial services professional who can operate independently, oversee complex client transactions, and provide exceptional service to high-net-worth clients.ResponsibilitiesClient Account Administration<ul><li>Open new client accounts and maintain account documentation</li><li>Process account transfers, including incoming and outgoing assets</li><li>Manage client requests and account updates</li><li>Coordinate RESP withdrawals, RRIF payments, estate settlements, and other account transactions</li><li>Ensure all documentation is complete, accurate, and compliant</li></ul>Trade & Transaction Processing<ul><li>Process client trade instructions accurately and efficiently</li><li>Handle cash withdrawals, deposits, transfers, and journal requests</li><li>Monitor transactions through completion and resolve any discrepancies</li><li>Liaise with internal operations teams and external financial institutions</li></ul>Compliance & Regulatory Administration<ul><li>Maintain compliance documentation and client records</li><li>Review new account applications for completeness and regulatory requirements</li><li>Ensure adherence to CIRO and firm compliance standards</li><li>Prepare and submit regulatory and compliance-related paperwork</li><li>Support audits, reviews, and compliance inquiries</li></ul>Client Service Excellence<ul><li>Act as a primary point of contact for clients</li><li>Respond to client inquiries regarding accounts, transactions, and documentation</li><li>Build strong, trusted relationships with clients through professional and proactive service</li><li>Handle sensitive and confidential client information with discretion</li></ul>Office Operations Leadership<ul><li>Serve as the senior administrative resource within the practice</li><li>Identify opportunities to improve processes and efficiencies</li><li>Provide guidance and support to junior administrative staff as required</li><li>Ensure smooth day-to-day operations of the advisory practice</li></ul>
2026-09-29T00:00:00Z

Administrative Assistant

Mississauga, ON
remote
Temporary
22 - 24 CAD / Hourly
We are looking for an Administrative Assistant to join a mission-driven team in Mississauga, Ontario on a Long-term Contract basis. In this role, you will provide responsive support to donor-related inquiries, maintain accurate records, and help ensure administrative processes run smoothly across multiple systems. This opportunity is well suited to someone who is organized, adaptable, and comfortable managing detailed work in a fast-paced environment. Responsibilities: • Respond to donor questions and support requests with professionalism, empathy, and timely follow-up across phone and email channels. • Update, maintain, and audit donor information in internal systems to help preserve complete and reliable records. • Investigate and resolve duplicate entries to improve database quality and support overall data integrity. • Assist with tax receipt administration, including processing adjustments and handling related record changes accurately. • Use ticketing platforms such as Freshdesk to log inquiries, monitor progress, and close requests efficiently. • Complete account maintenance and record change requests with close attention to detail and established service standards. • Review information in Excel files, validate details, and transfer corrected data into database platforms as needed. • Support ongoing administration across Microsoft 365, Dynamics, DonorDash, and related tools while helping the team manage changing priorities.
2026-10-01T00:00:00Z

Administrative Assistant

Burlington, ON
onsite
Temporary
24 - 25 CAD / Hourly
We are looking for an Administrative Assistant to support day-to-day office operations in Burlington, Ontario. This Long-term Contract position is well suited to someone who enjoys organizing information, maintaining accurate records, and providing dependable administrative support across teams. The successful candidate will help keep documentation complete, prepare reports and correspondence, and contribute to the smooth coordination of office activities. Responsibilities: • Assemble and organize job documentation packages so materials are complete, accurate, and ready for use. • Examine maps and municipal information to confirm files contain the appropriate supporting details. • Review records and packets to ensure required documents and data are included before submission or distribution. • Create, update, and maintain routine reports to support administrative tracking and office operations. • Draft, manage, and respond to written communications in a clear and timely manner. • Work closely with office personnel and corporate contacts to share information and support administrative needs. • Complete a range of paper-based administrative tasks, including document handling and general office support. • Maintain orderly filing systems and keep records easy to retrieve and up to date. • Learn company software and follow established processes to complete administrative duties effectively.
2026-10-02T00:00:00Z

Admin Coordinator / Executive Assistant

Toronto, ON
onsite
Permanent
70000 - 80000 CAD / Yearly
Job Title: Management AssistantSalary: $70-$80k Location: Toronto, Ontario Job Type: Full-time, Permanent Job Summary:Robert Half Canada is recruiting on behalf of our client, a global Asset Management firm for a Management Assistant opportunity in Toronto. This role is ideal for an organized and adaptable administrative professional who enjoys supporting office operations and senior team members in a fast-paced corporate environment. Key Responsibilities<ul><li>Coordinate meetings and events, including scheduling, preparing meeting materials, booking conference rooms, arranging catering, and ensuring meeting spaces are set up and equipped for a seamless experience.</li><li>Provide administrative support to leadership team members, assisting with document preparation, correspondence, reporting, special projects, and ad hoc administrative requests as needed.</li><li>Manage complex calendars and scheduling for senior leaders, coordinating internal and external meetings across multiple time zones, resolving scheduling conflicts, and ensuring efficient time management.</li><li>Coordinate domestic and international travel arrangements, including flights, and accommodations ensuring compliance with company policies.</li><li>Prepare, reconcile, and maintain expense reports and corporate credit card records.</li><li>Maintain confidential records, files, and administrative documentation while exercising a high degree of professionalism, discretion, and attention to detail.</li><li>Serve as a key point for greeting visitors and external clients.</li></ul>
2026-09-25T00:00:00Z

Accounting and Office Manager

Brampton, ON
onsite
Permanent
75000 - 80000 CAD / Yearly
Job Title: Accounting and Office ManagerSalary: $75-$80kLocation: Brampton, OntarioJob Type: Full-time, Permanent Job Summary: Robert Half Canada is seeking a dependable and detail-focused Accounting and Office Manager on behalf of our client in the healthcare/senior care industry. This position combines accounting responsibilities with office administration and is well suited for someone who enjoys managing financial processes, supporting daily operations, and helping maintain an organized and efficient workplace. Key Responsibilities:<ul><li>Oversee daily accounting operations, including accounts payable, accounts receivable, invoicing, and reconciliations</li><li>Prepare journal entries and assist with month-end and year-end close activities</li><li>Maintain general ledger accuracy and supporting financial documentation</li><li>Support budgeting, reporting, and cash flow tracking</li><li>Coordinate payroll-related administration in collaboration with internal or external providers</li><li>Monitor office operations, supplies, vendor relationships, and administrative processes</li><li>Maintain organized records, files, and internal documentation</li><li>Support leadership with administrative and financial reporting tasks</li><li>Help ensure compliance with internal controls, policies, and relevant regulations</li><li>Identify opportunities to improve accounting and office processes</li></ul>
2026-09-25T00:00:00Z

Payroll Administrator

Waterloo, ON
onsite
Permanent
52000 - 65000 CAD / Yearly
We are looking for a Payroll Administrator to support accurate and timely payroll operations for a busy healthcare organization in Waterloo, Ontario. This role is ideal for someone who combines strong technical payroll knowledge with a service-oriented approach when assisting employees and internal partners. You will play an important part in maintaining payroll accuracy, meeting legislative obligations, and contributing to efficient day-to-day administration. Responsibilities: • Manage end-to-end bi-weekly payroll processing for a varied workforce that includes salaried, hourly, unionized, and piece-rate employees. • Review payroll registers and related reports to identify discrepancies, confirm accuracy, and resolve issues before payments are issued. • Ensure employees, contractors, and other payees receive correct compensation within established deadlines. • Prepare and maintain payroll-related records, including vacation balances, statutory deductions, garnishments, benefits, and other payroll adjustments. • Work closely with Human Resources and other internal teams to keep employee information current and aligned with payroll requirements. • Provide support for employment documentation and payroll forms, including records of employment, tax documents, and remittance-related paperwork. • Respond to payroll inquiries from staff members and external agencies in a thorough and timely manner. • Coordinate year-end payroll activities, including the preparation and distribution of T4 slips. • Contribute to process improvements that strengthen payroll quality, compliance, and operational efficiency.
2026-09-28T00:00:00Z

Payroll Administrator

Kitchener, ON
onsite
Permanent
75000 - 85000 CAD / Yearly
Our client, an established organization in the Kitchener-Waterloo area, is seeking a Payroll Administrator to join their team. This is an excellent opportunity for a detail-oriented payroll professional with experience managing multi-provincial payroll, including Quebec, who takes pride in ensuring employees are paid accurately and on time. The Payroll Administrator will be responsible for the day-to-day administration of payroll, employee data maintenance, payroll reporting, government filings, payroll calculations, and responding to employee and management inquiries. Must-Have Qualifications<ul><li>Payroll experience using Oracle is required.</li><li>Minimum 2 years of payroll experience.</li><li>Experience processing multi-provincial payroll, including Quebec, is required.</li><li>Payroll Compliance Practitioner (PCP) designation is required.</li><li>Strong understanding of Canadian payroll legislation and compliance requirements.</li><li>Strong attention to detail and accuracy.</li><li>Ability to manage confidential employee and financial information.</li><li>Excellent organizational skills and the ability to meet strict payroll deadlines.</li></ul>Key ResponsibilitiesPayroll Processing & Administration<ul><li>Collect, review, and validate employee hours and payroll submissions.</li><li>Calculate and input employee hours and other payroll-related information.</li><li>Enter payroll changes and employee updates for each pay period.</li><li>Provide payroll information and support to Branch Managers as required.</li><li>Process special payroll entries, including bonus payments and other adjustments.</li><li>Calculate statutory holiday pay and other payroll-related entitlements.</li><li>Calculate and process health benefit and pension payments.</li><li>Prepare and verify employee statements of earnings.</li><li>Run payroll reports and review information for accuracy.</li><li>Prepare and process payroll-related journal entries.</li><li>Ensure payroll is processed accurately and within established deadlines.</li><li>Process payroll across multiple Canadian provinces, including Quebec.</li></ul>Government Reporting & Compliance<ul><li>Complete and submit required government forms and documentation.</li><li>Prepare and submit Employment Insurance (EI) new hire reports.</li><li>Prepare and process Records of Employment (ROEs).</li><li>Assist with the preparation, reconciliation, and distribution of annual T4s.</li><li>Ensure payroll records and documentation are accurate and properly maintained.</li><li>Maintain compliance with federal and provincial payroll legislation.</li><li>Apply Quebec-specific payroll requirements as applicable.</li></ul>Banking Administration<ul><li>Support payroll-related banking administration and processes.</li><li>Maintain open communication with banking partners and internal stakeholders.</li><li>Respond to and resolve payroll-related banking inquiries and discrepancies.</li><li>Ensure payroll funding and banking information is accurate and timely.</li></ul>
2026-09-30T00:00:00Z

Receptionist & Office Assistant

Toronto, ON
onsite
Permanent
50000 - 60000 CAD / Yearly
Robert Half Canada is supporting a client in the search for a Receptionist & Office Assistant. This opportunity is well suited to someone who is organized, approachable, and attentive to detail, with a strong commitment to providing professional front-office and administrative support. Key Responsibilities<ul><li>Welcome visitors, clients, and team members in a professional and respectful manner</li><li>Answer, screen, and direct incoming phone calls and email inquiries</li><li>Maintain reception and common areas to support a clean, organized, and welcoming workplace</li><li>Manage incoming and outgoing mail, courier deliveries, and office shipments</li><li>Provide general administrative support, including data entry, filing, scanning, and document preparation</li><li>Schedule meetings, book boardrooms, and assist with calendar coordination</li><li>Order and track office supplies and support vendor coordination as needed</li><li>Assist with internal office operations and provide support to various departments</li><li>Maintain accurate records while handling sensitive information with discretion</li><li>Support special projects and other administrative tasks as assigned</li></ul>
2026-09-11T00:00:00Z

Payroll & HR Administrator

Guelph, ON
onsite
Permanent
60000 - 75000 CAD / Yearly
We are looking for a Payroll & HR Generalist to support payroll and human resources operations for a manufacturing organization in Guelph, Ontario. This position combines accurate payroll administration with day-to-day HR coordination, helping employees and managers receive timely support across a range of people processes. The successful candidate will bring strong attention to detail, sound knowledge of legislative requirements, and the ability to handle confidential information appropriately. Responsibilities:• Administer weekly payroll within established timelines while ensuring earnings, deductions, and related calculations are processed correctly.• Maintain up-to-date payroll files and employee records, ensuring information is accurate, complete, and properly documented.• Oversee benefits administration, statutory deductions, and required remittances in accordance with applicable regulations and internal practices.• Prepare Records of Employment and contribute to year-end payroll tasks, including the compilation of T4 information.• Address payroll-related questions from employees by providing clear, timely, and attentive support.• Assist with hiring activities by coordinating recruitment steps, preparing onboarding materials, and supporting new employee setup.• Help deliver employee orientation and provide administrative support for benefit, pension, leave, and accommodation matters.• Produce HR documents and reports while responding to employee and manager questions related to workplace policies and procedures.• Contribute to employee engagement efforts and assist with the coordination of training activities and related communications.
2026-10-01T00:00:00Z

10 results for Office Administrator in Mississauga, ON