How to display employee department head?(urgent pls)

Question

Hello Everybody,
I have to write a function. here i am passing person_id(employee) as a parameter to function.
it has to display employee department head person_id.( for example if employee belongs to Department B. Department B is child of Department A. i mean to say that i need to find out head(person_id) of department A)
i try to find out till employee organization_id by using per_all_people_f and per_all_assignments_f tables.
please some one respond. it is bit urgent.
Thanks in advance.

Answer 1

Thanks Subhasish for your reply.
subhasish really i need your help here. i am developing custom work flow. In that i have to use function. here i have to give employee name has a paramer, then function has to return his division head id(manager).
my requirement is when an employee applied for mobil connection, the request has to go to division head(manager) of that employee. here we have there levels 1.Division(First level)2.Department(second level) 3.base(third level).
the employee may related to any level, the request has to go to division head(manager).
here i am using this query
select hou.organization_id, pse.organization_id_parent ;
from hr_all_organization_units hou, per_org_structure_elements_v pse
where hou.organization_id= pse.organization_id_child
and hou.organization_id in (select organization_id from per_all_assignments_f
where person_id in
( select person_id from per_all_people_f
where first_name='Thoms'));
and i come to know that i have to use fnd_lookup_types and fnd_lookup_values tables. where has i failed to return the division head_id.
kindly give some solution.
Thanks.