The two queries:

set dateformat 'dmy'
select count(c.id), e.name
from call c left outer join employee e
on c.req_id = e.id
where c.posted between '01/01/2002' and '30/11/2002'
group by e.name
order by count(c.id) desc

set dateformat 'dmy'
select count(ch.id), e.name
from call_hist ch left outer join employee e
on ch.req_id = e.id
where ch.posted between '01/01/2002' and '30/11/2002'
group by e.name
order by count(ch.id) desc

the results:

42 NULL
34 Dirk Deloof
13 Annick Leirman
11 Ronny Loosen
9 Geert Benoot
9 Nicole Ferrari
8 FLOCK
8 Mosselmans Christoph
7 Geert Pets
7 Mireille Dutrieue
6 johan
6 Laurent De Schrijver
5 Jeanette De SChrijve
5 Marc De Vlieger
5 minerva
5 Pascal Saesen
5 Rik Haghebaert
5 Sonja Van Kerckhove
4 Bcatron
4 Luc Willems
3 Brigit Brocken
3 euroadmin
3 Francine Kopp
3 Luc Steyaert
3 Marie-Rose Buysse
3 Marnix Van Steirtege
3 Mattias Denys
3 Pieter Frooninckx
3 Reserve
3 Rik De Scheemaecker
3 Thierry Linard
2 Carlos Van Alboom
2 Dorine Sierens
2 Els Poelman
2 Jean Claude Vermeir
2 Katrien Colman
2 Kim Impens
2 Kris Lejeune
2 MEDreserve01
2 Roger De Wilde
1 Agnes Lebon
1 Carla Van Den Broeck
1 Eric Vlaeminck

and

118 NULL
58 Marie-Rose Buysse
47 Dirk Deloof
45 Ronny Loosen
43 Annick Leirman
41 Geert Pets
38 FLOCK
38 Pascal Saesen
28 Teamleiders afwerkin
24 Kim Impens
22 Ilse Soetens
22 Rik Haghebaert
22 Severine Balduck
21 Teamleiders print
20 Mosselmans Christoph
20 Jeanette De SChrijve
19 Geert Benoot
19 Francine Kopp
18 Geert Meuleman
17 Rik De Scheemaecker
16 johan
16 Katrien Colman
15 Gaby Eloot
14 Kris Lejeune
14 Gilbert Callebaut
14 Laurent De Schrijver
13 Els Poelman
13 Luc Steyaert
11 Marnix Van Steirtege
10 Frans Hoogewijs
10 Sonja Van Kerckhove
10 Dorine Sierens
9 Eric Vlaeminck
9 Thierry Linard
7 Frederic Denis
7 Michel Poppe
6 Carla Van Den Broeck
6 Pieter Frooninckx
5 Katlijn Poleyn
5 MEDreserve01
5 Mireille Dutrieue
5 Agnes Lebon
4 Guido Antoin
4 Onderhoud
4 minerva
4 Jeanette Van Brussel
3 Roger De Wilde
3 Sofie Gabriels
3 Verf2
3 euroadmin
3 Marc De Vlieger
2 Luc Willems
2 MEDRESERVE07
2 Regina Decoster
2 Monique Kohl
2 MEDRESERVE04
2 Portier
2 Bcatron
2 Pierre Hanet
2 Tgabriels
2 Isabelle Torrelle
2 Nicole Ferrari
1 Robert Zwaak
1 Carlos Van Alboom
1 testuser
1 Brigit Brocken
1 Reserve
1 Opleiding
1 Verf

How do I put these results in one? I need not two but one Query.
Please help me. Thanks