But new research shows that promotions and power at work also increase conflict with co-workers, particularly when the new boss is a younger man.

但是新的研究表明，工作上的晋升和权力会和同事造成冲突，特别当新老板是比较年轻的男士。

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That can particularly raise prices for companies with younger, healthier workers but may lead to small increases, or even reductions, for businesses with less-healthy workers.

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