BUZZ-Royal Mail: falls after workers vote to strike
** Royal Mail (LSE: RMG.L - news) shares down 3.6 pct as workers vote to hold a strike in pension dispute
** Comes after co's move to replace its defined benefit pension scheme & potentially threatens postal delays at Christmas
** The Communications Workers Union (CWU) said 89.1% of its members at Royal Mail voted for the strike
** Co says industrial action would be "damaging" for its business
** Royal Mail says it is committed to further talks
** Jefferies ("underperform") flags potential large downside risk to estimates and valuation because of the strong support for industrial action
** Stock among worst performers on pan-European Stoxx 600 index