What determines the value of the employee: his work or his knowledge? Why?

I think his/her interest in the capacity where he have been placed, that interest will be his motivating factor to boost his/her performance.

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His - Her achievements and touches

Thank you for the invitation.

The employee's work and knowledge determine his value.  The skills attained during training on the job shows his will power to be professional in his outlook and perform his job with the knowledge of his past projects ( the methods that work with different task displays his confidence level to share the skills helping another person on the job) and helping the company as well. 

It build the reputation for the company to have knowledgeable staff.  He grows in leaps and bounds achieving  successs for the company and bringing people in the company closer to excellence. 

The growth rate of success and profits within the company helps the leaders to share bonus and awards for this excellence.  Promotions to higher posts within the company.

Both. the knowledge and the way he uses his knolwedge positively fot the betterment and benefit of organization. 

Both are important tools for an employee knowledge & also work 1-if am employee has a knowledge but he didn’t succeed to implement will fail. 2-and if he is hard working but has no knowledge will also fail coz he didn’t able to satisfy his Clint. Knowledge and hard work makes him successful . if an employee has both qualities and he has also a chance he prove himself easily

Both determine their value because when the employee has a great knowledge but his job is low, his real value is not shown here. In contrast, when his job is high and his knowledge is low, there are problems for this.