I can't imagine this would violate zoning laws if the employer did it and declared it it as a temporary structure for construction staff. And the expense wouldn

I can't imagine this would violate zoning laws if the employer did it and declared it it as a temporary structure for construction staff. And the expense wouldn't have raised an eyebrow for the agency reviewing the construction contract. Maybe some permitting laws - should someone have signed off on the kitchenette being properly vented, etc. This is an employee slacking off to build a side project that will be owned by to the company, but mostly has value for himself. Which wouldn't normally be a criminal matter, but the laws are (correctly) stricter about doing this kind of thing with public funds.