This paper considers the efficacy and the desirability of home governm
ent tariff and subsidy policies when labour market structure and asymm
etries in the firms' size matter. In a Cournot-Nash duopolistic sector
, a unionized home-firm competes against a non-unionized foreign firm.
The home firm-union choose wages and employment in a two-stage Nash b
argaining game. The second stage corresponds to the Cournot-Nash game
with the foreign firm. Firms may play in strategic substitutes or comp
lements. As the home bargainers recognize that market shares are deter
mined by relative marginal costs, they may use the wage stage strategi
cally. Home government policy choices critically depend upon the barga
ining structure and general equilibrium spillovers.