合同问题，大家帮忙看看！
On   the   premise   that   Party   B   works   normally,   the   salary   is   4000   RMB/Month   (all   the   allowances   stipulated   by   the   government   are   included   in   the   salary)   +   a   bonus   (agreed   separately).   20%   of   the   salary   is   merit   pay   and   its   issuing   portion   is   from   0%   to   40%   based   on   the   result   of   evaluation   per   month.

Party   B为劳方，Party   A为资方，合同中的   “20%   of   the   salary   is   merit   pay   and   its   issuing   portion   is   from   0%   to   40%   based   on   the   result   of   evaluation   per   month.”到底是什么意思呢，请大家解释下，越清晰越好，谢谢！


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接分
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外包呵呵