Office manager duties and responsibilities

The office manager role is easy to describe and hard to do: keep the workplace running, keep costs visible, and handle the hundred small tasks that nobody else owns. The best job descriptions separate the core duties from the occasional ones.

What does an office manager do?

An office manager keeps the day-to-day operations of a workplace running. That includes facilities, suppliers, supplies, safety, budgets, and the administrative work that supports employees and managers.

The role varies by company size. In a small business, the office manager may also own HR administration, IT coordination, and event planning. In a larger company, the role is usually narrower and more process-driven.

Core office manager duties

These are the responsibilities that appear in most office manager job descriptions. The exact mix depends on the office, but the categories are consistent.

• Facilities: maintenance, cleaning, repairs, security, and access.
• Vendors: sourcing, contracts, service levels, and performance reviews.
• Supplies: inventory, ordering, budgets, and delivery checks.
• HR administration: onboarding logistics, records, and policy communication.
• Safety: inspections, evacuation plans, first aid, and incident logs.
• Finance: office budget, invoices, expense approvals, and cost tracking.
• Events and meetings: room setup, catering, and logistics.
• Communication: announcements, signage, and the employee handbook.

Office manager responsibilities by cadence

A role with no cadence becomes a list of emergencies. Split the work into daily, weekly, and monthly routines.

• Daily: walk the office, check shared spaces, respond to facilities issues, and confirm vendor attendance.
• Weekly: review supplies and open tickets, check cleaning and maintenance, and update the operations log.
• Monthly: review the budget, vendor performance, safety checks, and recurring issues.
• Quarterly: review contracts, suppliers, space use, and the office management plan.

Skills an office manager needs

The role rewards organization and judgment more than formal credentials. The strongest office managers are calm, practical, and comfortable following up.

• Organization and prioritization
• Clear written and verbal communication
• Negotiation and vendor management
• Budget tracking and basic financial literacy
• Project management for moves, events, and office changes
• Discretion and confidentiality
• Problem-solving under time pressure

Office manager vs office coordinator vs admin assistant

Titles overlap, but the scope usually differs.

• Office manager: owns the office operation, budget, vendors, and processes.
• Office coordinator: coordinates schedules, supplies, events, and facilities tasks, often with less budget authority.
• Administrative assistant: supports individuals or teams with calendars, travel, documents, and correspondence.
• In small companies, one person may do all three. The job description should say which responsibilities are core and which are occasional.

A weekly checklist for office managers

Use a short checklist to keep the routine visible. It is also a useful handover document when you are on vacation.

• Walk the office and log issues with an owner and due date.
• Review open maintenance and cleaning tickets.
• Check supply levels and place approved orders.
• Confirm vendor visits and service quality.
• Review the budget and flag overspend.
• Update employees on changes, closures, or office rules.