I’ll just give some examples.

We know that construction workers build things, but many office workers are behind them. When you hear “office worker,” think “information worker” as that will help.

What information?

Someone has to pay the construction workers. This involves accounting and payroll tasks best done at a computer.

Architects design the project being constructed and this is done in an office.

There are permits, inspections, regulations, taxes, real estate licensing etc to clear the project and this is done through computers and telephones.

Coordination of the different work crews must be planned - we don’t just ask concrete, civil engineers, plumbers, electrical, and landscaping to all show up on the same day and just figure things out. These things are scheduled out and arranged with many different companies / subcontractors and this is mapped out on a computer and agreed to over the phone.

The new apartments being constructed will need tenants to rent them. Billboard space is going to be rented near the building. A graphic designer is designing the billboard on a computer in an office. Someone else is calling the billboard company to arrange the large scale printing of it and to purchase the time it will be displayed.

I’ll stop. This is off the top of my head. If construction workers, with their obviously valuable and easy to understand work have this many office workers behind them, you can imagine how it’s even more complex for things like tech companies.