In recent years much attention has been paid to entry studies within i
ndustrial organisation research. Thus, high firm mobility secures that
resources move towards the most productive industries, and the threat
from potential entrants can restrain the incumbents from exploiting t
heir market power; as well as forcing them to be cost effective. The e
ntry behaviour of Danish firms is analysed in the empirical part of th
e paper. Market growth is found to induce entry, whereas minimum capit
al requirement and efficient plant size have the opposite effect An ab
ove normal profit proves to have only a weak effect on entry rates in
the Danish manufacturing industries.