What are you smoking? Change it, it is bad for logic: any tax a company pays for you is from the money you bring in, not from the shareholders personal bank accounts. Nobody pays for the pleasure to have someone as an employee, but for the employee to deliver more than what is paid, otherwise you go under.
Reduce the payroll tax, and, what then? Same amount of money coming in, same going out on salaries, less going out on payroll tax. Now the business has options. It can buy more stuff; it can employ more people at similar salaries; it can give the owners more money.
But the argument being made appeared to be that it will give its existing employees pay rises, to each one in line with how much payroll tax it was paying for each of them previously - but this just strikes me as a bit unlikely.
In Romania by law the company contribution was included in the payroll; there was no change in salaries, but people were finally able to see the total taxes they paid and calculate the percentage correctly: it was about double vs what they thought.