3 sentences

1. 公司通过绩效考核来评估员工的工作表现。

   gōng​sī tōng​guò jì​xiào kǎo​hé lái píng​gū yuán​gōng de gōng​zuò biǎo​xiàn.

   The company evaluates employees' performance through performance appraisals.

   Source: Dong Chinese Dictionary

2. 因为上班经常迟到，他这个月的绩效奖金被扣了很多。

   yīn​wèi shàng​bān jīng​cháng chí​dào, tā zhè gè yuè de jì​xiào jiǎng​jīn bèi kòu le hěn​duō.

   A large portion of his performance bonus was deducted this month because he was often late for work.

   Source: Dong Chinese Dictionary

3. 员工们都在准备年终考核，希望能拿到更好的绩效等级。

   yuán​gōng men dōu zài zhǔn​bèi nián​zhōng kǎo​hé, xī​wàng néng ná​dào gèng hǎo de jì​xiào děng​jí.

   Employees are preparing for their year-end appraisals, hoping to achieve a better performance rating.

   Source: Dong Chinese Dictionary