Hybrid Work Glossary: 25 Terms Explained Clearly

Hybrid work is a recurring mix of work in a shared workplace and work somewhere else. It describes location, not automatically flexibility, hours, or how a meeting runs. This glossary gives People Ops and workplace teams working definitions for 25 terms that are often mixed together.

The distinction matters because Microsoft hybrid terminology separates hybrid workers, hybrid teams, location, time, and flexibility instead of treating them as one idea. These are operational definitions, not legal definitions. If an internal policy uses a term differently, write that definition next to the rule.

Which hybrid work term should we use?

Start with the question you are trying to answer. This translation card keeps five different kinds of terms separate:

• Place: Use on-site work, remote work, hybrid work, or work location.
• People: Use hybrid worker or hybrid team.
• Pattern and time: Use hybrid work schedule, fixed schedule, flexible schedule, anchor day, usual office days, core collaboration hours, synchronous work, or asynchronous work.
• Space: Use desk sharing, hot desking, office hoteling, or activity-based working.
• Measurement: Use occupancy, utilization, office attendance rate, or team overlap.

A useful definition names what is being described, the time window, and whether the value is a plan or an observation.

Work model and location terms

1. Hybrid work

A recurring arrangement that mixes work at a shared workplace with work from another location. Hybrid work can be fixed or flexible. It can describe one person, a team, or an organization, so name the level you mean. Acas flexible working types describes hybrid working as one form of flexible working, while flexibility itself can also change hours or other patterns.

2. Hybrid worker

A person whose regular pattern includes both work in a location shared with colleagues and work in a location not shared with those colleagues. There is no universal frequency threshold, so a policy should state the period and minimum pattern it uses.

3. Hybrid team

A team whose members do not all work from the same place all the time. A hybrid team can include fully on-site, fully remote, and individually hybrid people. The team label describes the group, not necessarily every member.

4. On-site work

Work performed at the organization's designated workplace. On-site does not guarantee that relevant colleagues are there at the same time. The Harvard dynamic work glossary separates on-site location from co-location and schedule.

5. Remote work

Work performed somewhere other than the usual workplace. Home is one possible remote location, but remote work can also happen at a client site, coworking space, or another agreed location. The exact permitted locations belong in the organization's policy.

6. Remote-first

An operating model in which remote participation is the default for communication, documentation, and meetings, even when an office exists. The label is not standardized. Define any office expectation, time-zone limits, and in-person events instead of relying on the label alone.

7. Office-first

An operating model in which the office is the default workplace and remote work is secondary or limited. Office-first is not the same as fully on-site. A useful definition states how often remote work is available and who decides.

Schedule and coordination terms

8. Hybrid work schedule

The days and times a person or team plans to work on-site and remotely. A schedule should identify the period it covers, the location options, who can change it, and how changes are shared.

9. Fixed hybrid schedule

A repeating pattern with consistent remote and on-site days, such as the same two office days each week. The LLNL hybrid workplace guide distinguishes fixed telecommuting days from a variable schedule. Fixed describes the pattern, not whether exceptions are possible.

10. Flexible hybrid schedule

A pattern in which office and remote days can change within agreed limits. Flexible might mean employee choice, team choice, manager approval, or a monthly target. State which form applies and when the plan must be visible.

11. Anchor day

A regularly recurring day when a team is expected or encouraged to work together on-site. Harvard uses this meaning in its glossary. An anchor day should have a purpose, not just a weekday. Use the anchor day setup checklist to define that purpose and review the pattern.

12. Usual office days

A person's recurring weekly intention for office attendance. It is a planning baseline, not proof of presence. In Officedays, usual office days help teammates start with a regular pattern and update a specific week when plans change.

13. Work location

The location a person shares for a day or part of a day, such as office or remote. Microsoft work location guidance treats work location as a profile signal used to coordinate in-person meetings. Its separate workplace check-in guidance says that signal is not an attendance record.

14. Core collaboration hours

A shared time window when team members are expected to be available for live collaboration. Core hours describe time, not place. A distributed team can share core hours while working from different locations.

15. Synchronous work

Work that requires people to participate at the same time. A video call is synchronous and remote. A workshop can be synchronous and co-located. Time and place are separate dimensions.

16. Asynchronous work

Work that does not require everyone to participate at the same time. Examples include a written decision record or a review with a clear deadline. Asynchronous does not mean uncoordinated. It still needs context, ownership, and a response window.

17. Co-located work

Work performed by people in the same physical place. Co-location says nothing about the activity. People can sit in the same office while doing separate focus work, or use the time for a shared workshop.

Office space terms

18. Desk sharing

A broad arrangement in which desks are not permanently assigned one-to-one to every employee. It describes the relationship between people and desks, not the method used to choose a desk.

19. Hot desking

Use of non-dedicated workstations without a permanent personal assignment, commonly on an available-desk basis. The GSA internal workplace policy distinguishes hot desking from reservable hoteling. Local practice may use the terms differently, so state whether reservations are required.

20. Office hoteling

Use of non-dedicated workspaces that people reserve before use. A reservation is the key distinction in this glossary. Hoteling can apply to desks, offices, or other bookable workspaces.

21. Activity-based working

A workplace model in which people choose a type of space suited to the task, such as a focus area, collaboration zone, or quiet room. It is a space design and behavior model. It can exist in a fully on-site office as well as a hybrid one.

Measurement terms

22. Occupancy

A count or rate describing people physically present in a space at a defined time or over a defined reporting period. GSA occupancy reporting guidance requires daily totals of physically present people for its federal reporting use case. Other contexts use different denominators, so publish the formula with the result.

23. Utilization

A measure of how intensively a usable space or resource is used across time. Workplace sources do not always use the same formula. Our guide to occupancy and utilization formulas separates physical presence, time-based space use, assigned-to-seat ratio, and office attendance.

24. Office attendance rate

An operating metric that compares qualifying office days with eligible expected office days for a stated group and period. It is not a universal standard. Define exceptions, partial days, corrections, and the denominator before reporting it. See the office attendance rate formula for a complete specification.

25. Team overlap

The number or share of relevant teammates who plan to be, or were, in the same workplace on the same day. Always label the value as planned or observed. The team overlap planning worksheet shows how to use planned overlap when choosing a team day.

Five pairs not to confuse

• Hybrid work and flexible working: Hybrid describes a location mix. Flexible working can change location, hours, timing, or another work pattern.
• Hybrid worker and hybrid team: One describes a person's pattern. The other describes a group with mixed location patterns.
• Fixed and flexible hybrid schedule: One repeats consistent days. The other lets days change within stated limits.
• Hot desking and office hoteling: Both use non-dedicated space. In this glossary, hoteling requires a reservation and hot desking does not.
• Occupancy and office attendance: Occupancy describes physical presence in a space. Attendance compares qualifying office days with an eligibility or expectation rule.

Copy-and-use hybrid terminology card

Use this small specification whenever a term appears in a policy, dashboard, onboarding guide, or product setting:

• Term: The label people will see.
• One-sentence definition: What the term means here.
• Includes: Events, people, places, or time included.
• Excludes: Similar cases that do not count.
• Plan or observation: Whether the value records intention or measured presence.
• Unit and time window: Person-days, people, desks, hours, or a percentage, plus the reporting period.
• Source and owner: Where the definition came from and who maintains it.
• Review date: When the team will check whether the definition still supports the decision.

Example: Planned office day. A day when a teammate has stated an intention to work from the nominated office. It includes a submitted weekly plan and excludes an unchanged default after the person reports a different location. It records intent, not physical presence.

How to introduce shared definitions

1. Choose only the terms you need. Start with the decisions your team already makes.
2. Mark local definitions. If your organization uses a term differently, say so beside the definition.
3. Separate plans from observations. A schedule, usual day, or work location can express intent. Occupancy and verified attendance describe different evidence.
4. Review after one operating cycle. Ask whether two people could interpret the same field differently, then tighten the wording.

Make work location visible in Slack

Officedays lets teammates share office-day plans in Slack and see who intends to be in the office on a given day. Use it for coordination, then keep policy definitions and measurement rules explicit.

Sources and methodology

This glossary is a synthesis of institutional definitions and current product documentation, not original Officedays research. Sources were last checked on August 30, 2026. Definitions were paraphrased and narrowed for practical workplace coordination. No survey statistics are used, so geography and sample size do not apply. Organization-specific source terms are identified as examples, not universal standards.

• Microsoft hybrid terminology, published September 9, 2021. Used for hybrid worker, hybrid team, co-location, remote work, and the separation of location from flexibility.
• Acas flexible working types, updated June 10, 2026. Used for the distinction between hybrid work, remote work, flexitime, and other flexible patterns in a UK guidance context.
• Harvard dynamic work glossary. Publication date not shown on the document. Used for on-site, remote, anchor day, co-located, synchronous, and asynchronous terminology in Harvard's operating context.
• LLNL hybrid workplace guide, dated 2021. Used for fixed and variable schedules plus reservable drop-in workspace in a U.S. laboratory context.
• Microsoft work location guidance. Used for shared daily work location as a coordination signal in Microsoft 365.
• Microsoft workplace check-in guidance, updated July 1, 2026. Used to distinguish a work-location signal from attendance tracking.
• GSA internal workplace policy, signed August 21, 2025. Used for U.S. federal definitions of hot desking and hoteling.
• GSA occupancy reporting guidance, updated March 17, 2026. Used for the physically present population in its federal occupancy reporting method.