Unemployment taxes are levied on the FIRST 7,000 of an employees wages paid each year.
So for the fulltime employees, you only count 7,000 of their salaries.
The corporation will pay taxes on 14,000 for full-time and 4,000 from part-time or 28,000 total. If the rate is 5.4%, the total taxes paid will be
28,000*5.4% = $1,512