How many workspaces do you actually need? Which areas are consistently busy and which remain underused? And does an occupied desk always mean it is actually being used?

For organisations with hybrid workspaces, these are increasingly important questions. Yet workspace occupancy is still often measured through manual counting. At the same time, many offices are familiar with the ‘towel on the sunbed’ effect: a bag, laptop or jacket keeps a desk occupied while the employee is somewhere else.

The result is simple: what looks occupied does not always reflect what is actually being used.

Manual counting: useful, but limited

A manual count can provide an initial indication of occupancy. But ultimately, it remains a snapshot.

Imagine someone walks through the office at 10:00 and counts 70 occupied workspaces. An hour later, that number could already be very different. To identify meaningful patterns, multiple counts are needed across different days and times. This takes time and still depends heavily on the exact moment the measurement takes place.

Especially in a hybrid workspace, where occupancy can change significantly throughout the day, this creates limitations.

And then there is the ‘towel on the sunbed’ effect

Another challenge is the difference between a claimed and an actually used workspace.

A laptop is on the desk, a jacket is hanging over the chair and a bag is placed next to it. To someone carrying out a manual count, that desk appears occupied. But the employee may have been in a meeting for the past hour and a half.

For colleagues, an available workspace appears unavailable. For facility management, it can mean that reported occupancy is higher than actual workspace usage.

That distinction matters when organisations want to make informed decisions about their workspace.

From counting to actually measuring

Continuous occupancy measurement provides a much more complete picture. Instead of relying on a few moments in time, organisations gain data across longer periods.

This makes it possible to answer practical questions. When are our busiest periods? Which floors are used most intensively? Which workspaces remain structurally underused? And how long are workspaces actually occupied?

That information can support decisions about office layouts, required floor space, cleaning and other facility services.

But you need to be able to trust your sensors

Continuous measurement only adds value when the underlying data is reliable. That makes sensor quality an important part of the solution.

Zens sensors are integrated into the workspace and cannot simply be removed, helping ensure that measurements remain connected to the correct desk. They are also battery-free, avoiding the need for periodic battery replacements, and the hardware is manufactured in Europe.

But reliable sensors alone are not enough. The digital representation of your workspace needs to continuously match what is happening in the real world. If a sensor is moved, disconnected or stops working, occupancy data can quickly become inaccurate.

That is why the Zens Desk Management System uses proactively managed sensors. Sensor performance is continuously monitored, so issues can be detected and followed up instead of remaining unnoticed. This helps keep the physical workspace and its digital representation aligned, resulting in consistent and reliable occupancy data.

Good workspace data is therefore not just about measuring continuously. It is about making sure you can continuously trust what you measure.

Not more data, but better insights

The goal is not to collect as much data as possible.

It is to give facility, workspace and real estate teams a reliable picture of what is actually happening in the office. Not one manual count on a Tuesday morning. Not the number of desks with a laptop or bag on them. But consistent insight into how the workspace is really being used.

From there, organisations can make targeted improvements and measure their impact over time.

Because if you can’t measure it, you can’t improve it.

Ready to move beyond manual counting?

Get reliable, continuous insights into how your workspaces are actually being used. With the Zens Desk Management System, you can turn accurate occupancy data into smarter decisions about space, facilities and your future workspace.

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