"workers in the field" is correct and usable in written English.
You could use it in a sentence such as: "The workers in the field were diligently harvesting the crops."
Here's to the workers in the field.
Amazingly, there are very few workers in the field.
The Army has said that it employs about 200 mental health workers in the field.
An estimated 150 workers in the field have lost their jobs so far.
Many humanitarian workers in the field work together, live together and socialise together.
Like a lot of workers in the field, Alan Sheinwald chose Nextel for this service.
Power was once again diffused outwards to workers in the field.
How does this relate to social workers in the field of palliative or end of life care?
A professional network is also being developed to provide specific support for development workers in the field.
Nearly all workers in the field seem to mean some sort of digital computer when they refer to a machine.
Some have concentrated on the influence of seminal workers in the field and talk of "Caslon's," "Bodoni's," etc.
