Can't call method "pay" without a package or object reference at
        employeedriver.pl line 28, <$file_handle> line 5 (#1)
    (F) You used the syntax of a method call, but the slot filled by the
    object reference or package name contains an expression that returns a
    defined value which is neither an object reference nor a package name.
    Something like this will reproduce the error:

        $BADREF = 42;
        process $BADREF 1,2,3;
        $BADREF->process(1,2,3);

Uncaught exception from user code:
        Can't call method "pay" without a package or object reference at employeedriver.pl line 28, <$file_handle> line 5.
 at employeedriver.pl line 28