A certificate is generally only used when you are certified in a specific skill that requires certification. For example, I have a certificate in forklift operation, as that is required for me to operate a forklift. A document for work experience is generally just called a resumé as Marshmallo has indicated. The information is only validated with contact information or references from the previous jobs (example: a past supervisor).

Hello! I believe that it is correct when addressing a document that is validating the qualifications of working experience, but another term that might be helpful would be a 'resumé of the persons work experience' . Saying this clarifies all their work experience from part time jobs to corporate ones, as well as how many years one has done. Hope this is helpful!

Thank you so much, Marshmallo & Alex!! I can make sense how different nuance is between 2 words. So would it be decent to say 'Resume of the personal work experience' ? Is Document of work experience also possible?