Office handbooks, or office manuals, are a type of instructional manual designed to inform employees about policies and procedures related to working in the organization's office environment. These handbooks typically cover a range of topics related to office life, and they are intended to standardize operations, improve morale, and reduce conflict within the office. Typically, office handbooks contain both material related to specific office procedures and more general material related to the organization's policies, including a statement on sexual harassment and discrimination. Office handbooks are frequently distributed to new employees, and updates are made available to all employees upon revision. Similar to an employee manual, an office handbook attempts to balance employee rights with employer needs.

An office handbook usually covers such day-to-day tasks as photocopier use and repair, keeping the office environment clean, privacy issues, interpersonal relations, telephone use, and the preferred way to interact with customers in the office. The handbook will also typically include a list of resources, including contact information for key staff at the company and information on vendors/suppliers and how to order office supplies when needed. Increasingly, manuals also specify proper office attire and dress codes, especially as younger workers enter the workforce with different ideas from senior management about what is appropriate attire for the office.