Strategic monetary policy in a monetary union with non-atomistic wage setters



regimes and get rid of the impact of domestic CBC, we assume in section 7.2 that the
CB is neither conservative nor populist, i.e. we evaluate the labor demand elasticity when
μυ = IUi ∕ι = 0 which yields

and


.—.

where Ph =


^u ]β=3u


(n — 1)σ — 1
n — a


(57)


г ,     =       (k + pF $f ) [1 + (nH 1M

^n β=β∏   PfΘf (пнΘf 1 + Θn) + к(пн 1 + Θn)


(58)


k(k+βp θF )
(1-θw f (fc+βp θf )


i о      к ггл    ∙      i    r._ii ∙-jji

and Pu = α-α)There is no value of пн belonging to the


relevant domain in which the elasticity (57) and (58) cross each other50. The expression


(57) evaluated at пн = 1 yields


^' ,βu=βu '" 1     1 a


(59)


Note that expression (58) is an increasing function of foreign CB hence we evaluate it
when
Pf → ∞ as follows:

^f

[^n^h =β∏Λn=1ΛβF→∞ - 1 a'                     ((

It is apparent that expression (59) is always larger than (60).which proves Proposition 7.

Welfare and macroeconomic institutions. It is straightforward to compute that
welfare level as follows:

-= I τ l(1 — ɪ )(— (1 — ɪ ))] = ⅞ (1 — ⅛ )∙       -)

Now consider the problem of maximizing the individual welfare on the constraint set as
follows:


max Uji

Fi ,β

s.to nH1 Λ P ≥ 0.


(62)


The solution of the Kuhn-Tucker conditions yields


if σ  >

if σ  <


к + Pf θF       a, „

——      ---r, p = 0 λ nH 1

n + P f ^f (1 — a)

к + Pf θf       a, „

——      ----, p0 λ nH = 1

n + P f ^f (1 — a)


50Such a value is in fact n = —ɪ.
σ


34




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