I have try your code in my ide, and found some errors.

you have define two symbol named [empleado1] . [puesto1] and [puesto2] are not defined yet.

Empleado empleado1 = new Empleado("qwert y1", "juan", "Garcia", "calle 3", "53700", "MEXICO", puesto1);
Empleado empleado1 = new Empleado("qwert y1", "maria", "barrera", "calle456",...