An office manager runs the office as an operation: the suppliers, the facilities, the administrative team and the budget that covers them. Where an administrator owns a process, an office manager owns the environment those processes run in, and usually has people reporting to them.
This guide sets out office manager duties and responsibilities, the daily routine, and how the role changes with organisation size. It sits in the Admin Office duties and responsibilities cluster, part of the wider job duties guide.
What Does an Office Manager Do?
An office manager keeps the working environment functioning so that everyone else can do their jobs. That covers the physical office, the supplier relationships behind it, the administrative staff who support it, and the spending it all requires.
In most South African organisations the role also absorbs whatever has no other home: HR administration, health and safety coordination, event logistics and the first response when something breaks. That breadth is why a written scope matters, particularly around what the office manager may authorise.
Key Office Manager Duties and Responsibilities
- Managing the day-to-day running of the office and its facilities.
- Supervising administrative, reception and support staff.
- Managing the office budget and approving spend within a delegated limit.
- Sourcing and managing suppliers for stationery, cleaning, catering and equipment.
- Negotiating and monitoring service contracts and lease-related obligations.
- Overseeing maintenance, repairs and office moves or reconfiguration.
- Maintaining records, document control and retention across the office.
- Coordinating health and safety compliance, including first aid and fire equipment.
- Supporting HR administration such as onboarding, leave records and staff files.
- Managing IT and telephone requirements with internal or external providers.
- Organising meetings, travel and company events.
- Reporting on office costs and improving administrative processes.
Daily Tasks of an Office Manager
- Start of day: check the office is operational, review staffing and any overnight issues.
- Morning: brief the admin team, handle supplier calls and approve purchase requests.
- Midday: deal with maintenance, IT and facilities issues as they arise.
- Afternoon: budget and invoice work, contract reviews, planning upcoming events or moves.
- End of day: confirm cover for tomorrow and follow up outstanding supplier commitments.
Office Manager Skills and Competencies
- Organisation: running several unrelated workstreams without dropping any.
- Supplier management: negotiating, holding suppliers to a service level and switching when needed.
- Budget control: reading a cost report and explaining a variance.
- People management: allocating work, handling attendance and coaching support staff.
- Problem solving: restoring service quickly when something fails.
- Discretion: handling personnel and commercial information appropriately.
Office Manager Duties by Workplace or Industry
Small and Medium Businesses
The role is at its widest here, often covering HR, bookkeeping support, facilities, IT liaison and reception alongside office management. The office manager is frequently the person who knows how everything actually works.
Corporate Offices
Duties narrow as facilities, IT and HR have their own departments. The focus shifts to coordinating with those functions, managing the admin team and controlling the office budget within a formal approval chain.
Professional Practices
In legal, medical and accounting practices the role adds client file administration, billing support and compliance documentation, with confidentiality obligations that go beyond ordinary office discretion.
Multi-Site Organisations
Duties extend to standardising administration across branches, coordinating suppliers centrally and travelling between sites to maintain consistent standards.
Office Manager Duties for a CV
Give headcount supported, budget managed and any savings or improvements delivered. Use the duties for a CV guide for the method.
- Managed office operations for a 90-person head office, supervising four administrative staff.
- Controlled an annual office budget of R1.8 million with a delegated approval limit of R25 000.
- Renegotiated cleaning and stationery contracts, reducing annual spend by 14%.
- Coordinated an office relocation of 90 staff with no operational downtime.
Related Job Roles and Responsibilities
These guides cover the roles and next steps most closely related to this one.
- Office Administrator duties and responsibilities
- Administrator duties and responsibilities
- Human Resources Administrator duties and responsibilities
- Manager duties and responsibilities
- Job description duties and responsibilities
Frequently Asked Questions About Office Manager Duties
What are the duties of an office manager?
Running the office day to day, supervising administrative staff, managing the office budget and suppliers, overseeing maintenance and facilities, maintaining records, coordinating health and safety, supporting HR administration, managing IT and telephone requirements, and organising meetings and events.
What is the difference between an office manager and an office administrator?
An office administrator executes and owns administrative processes. An office manager owns the office as a whole, usually including staff, budget and suppliers, and normally has people reporting to them.
Does an office manager handle HR?
Frequently, in smaller organisations, covering onboarding paperwork, leave records and staff files. Advisory HR work and disciplinary decisions should sit with someone competent in labour legislation, whether internal or an external adviser.
What qualifications does an office manager need?
Matric with strong computer literacy plus several years of administrative experience is the common baseline, and many employers prefer a diploma in office or business administration. Supplier negotiation and budget experience often matter more than the qualification itself.
What is the hardest part of office management?
Competing demands with no obvious priority. A supplier dispute, a broken air conditioner, a staff absence and a budget deadline can all land in the same hour, and none of them belongs to anyone else. Office managers who cope well set expectations early about what will be dealt with today and what will wait, rather than trying to appear on top of everything at once.
Does an office manager need budget authority?
Ideally yes, within a stated limit. A manager expected to run suppliers and facilities without authority to approve spend has to escalate every routine decision, which slows the office down and undermines the role. The limit should be written into the job description.
Duties vary by employer and organisation size. Check the job description for the specific scope, particularly around budget authority and staff supervision.
Last reviewed: 2 September 2026