Jack Welsh $(2005)$ wrote that companies should establish a $20-70-10$ rule whereby you reward the top $20\%,$ develop the $70\%$ and fire the bottom $10\%.$ Then each year you hire $10\%$ new employees $($plus regular turnover$).$ He felt that this is how companies become great.$$Assess this method $-$ what are the positives and potential issues with such a performance management system.$$

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Welsh, J$.(2005).$ Winning.$$ Harper Business.