Not being snarky -
Can you elaborate? So long as all taxes, etc are paid, then what is the problem? A "ghost employee" is one that does work but is paid off the books (or so I thought).
No, someone being paid off the books is not ghost employment. Its equally illegal but its not ghost employment.
A business gets a tax deduction for salaries/wages paid. Therefore the taxable income of the business is directly reduced by the salaries/wages paid.
Let me give you an example of ghost employment.
Mr X has an S-corp and hires employees. He also has a deadbeat 20 year old son who costs him money. He decides to put deadbeat son on the payroll for 50k a year even though son does nothing. Yeah, he is going to spend some money on payroll taxes, insurance and all of that, but all of that is going to be deductible to the business so its going to reduce HIS taxable income. Yeah, son is going to pay taxes on that income but dad is going to withhold those taxes from the 50k, so essentially dad is going to give son somewhere around 35k that nobody is going to pay taxes on.
That is a whole lot cheaper for dad than simply giving deadbeat son 35k in after tax income.
I fired a tax client once because he had three minor children and put all three of them on the payroll (its actually legal for minor children, even really young ones to receive a salary for working in their parent's business). However, his children were NOT working. He just put them on the payroll. So, he got to deduct their salaries from HIS income, but since their, on paper wages were less than the level required for them to pay taxes, their salaries just ended up being tax free income.
I hope that makes sense to you. Its a bit complicated and difficult to explain to a layman.