This article identifies four primary sources of upward mobility within publ
ic sector organizations.: namely, ability, reputation, social credentials,
and patronage. Ability is the Single most important source, but the other f
actors taken collectively are at least equally as important. Reputation res
ts on three factors: ability, visibility, and demeanor Social credentials c
omprise race,ethnicity, gender education, personality traits, attitudes and
values. Reputation, social-credentials, and patronage figure as sources of
upward mobility for three reasons: the fact that ability is assessed subje
ctively, the requirement for trustworthiness in administrative work and the
fact that superiors and subordinates engage in social exchanges.