To build a performance management system is far away from a piece of cake, it is a system engineering. All corporations must set up valid performance management systems, which are suitable for them.

实施绩效管理不是一蹴而就的，它是一项系统工程，企业必须要建立一套符合企业实际的行之有效的绩效考评系统。

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Landlords who do not have a valid Energy Performance Certificate (EPC) issued by an authorised assessor will be given seven days to provide one.

BBC: Slough landlords checked for energy ratings certificates

Indeed, benchmarks do play a valid role in evaluating the performance of a specific fund manager.

FORBES: Investors Need To Make Money, Not Beat Benchmarks

Anyone responsible for a travelling circus that uses wild animals in a performance will need to hold a valid licence, meet welfare standards and have a retirement plan for each animal.

BBC: Wild animals to be banned from circuses