Comparing Dates in Oracle SQL

Question

I'm attempting to get it to show the number of workers employed after June 20, 1994.

Select employee_id, count(*)
From Employee
Where to_char(employee_date_hired, 'DD-MON-YY') > 31-DEC-95; 

But I am getting an error:

"JUN' invalid identifier.

Can someone please help me with this?