The name is absent



Substituting the government budget constraint τk = -α) W into (A.25) and
solving for
λ, we obtain

λ = po (1 - α)(1 + δ) (⅛) ,

(A.28)


where we have used the fact that the absence of rents implies W = w = FL . Equa-
tion (3.4) in Proposition 3 is found by substituting (A.27) and (A.28) into (A.24)
and rearranging. The fraction
g0/u0 in (3.4) is the marginal rate of substitution
between private and public goods, and
FL is the marginal rate of transformation.
Since
( ι-1α ) (1-ε(1-α)) > 1, it follows immediately from (3.4) that g0/u0 >FL,
implying that public goods are underprovided relative to the first-best allocation.

Proof of Proposition 4: The proposition assumes that tax coordination starts out
from a tax competition equilibrium without rents where
W = w = FL , u0g = u0p =
u0 and ug = up . Further, when the individual country takes τ as well as r as
given, it follows from the government budget constraint (2.22) that
dW/ =
W∕α (1 α). Inserting these relationships into (4.2) and dividing the resulting
expression by (4.1), we get

MPC

MPB


= ɑ0(α)^ α((1


α)(1 + δ)
α+δ


(A.29)


By Proposition 3 the initial tax competition equilibrium satisfies (3.4) which may
be substituted into (A.29) to give

MPC


α + αδ

(A.30)


MPB α + δ ε (α + δ)(1 α)'

From Proposition 2 and the assumption n → ∞ it follows that ε > δ/ (α + δ) in
the initial tax competition equilibrium without rents. The expression on the right-
hand side of (A.30) must therefore be greater than one, implying
MPC > MPB.
Since
MPC is the marginal political cost of reducing public sector employment
and
MPB is the marginal political gain from spending the freed-up resources
on higher public sector wages, an unconstrained politician would thus want to
cut the public sector wage rate in order to expand public employment, but the
binding recruitment constraint
W w prevents him from doing so. When tax

37



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