Why did the 2008-2009 crisis sharply reduce wage earners’ bargaining power?

We begin with econometric estimations that show that the effect of the unemployment rate on wage growth fell considerably after the 2008-2009 crisis in the United States, the United Kingdom, the euro zone and Japan. This can be interpreted as a significant loss of bargaining power for wage earners . What accounts for this sharp loss of bargaining power for wage earners? Probably: The transfer of manufacturing jobs to services companies, where union membership is low and wage earners have little room to negotiate; The intensification of competition in goods markets, lead ing companies to resist calls for wage increases; Companies’ determination to rapidly lift their profitability; The need for job seekers to find a job - even a low-paying one - after a long period of high unemployment.