I am copying and pasting below the relevant portion from the link I sent you. Since the applicant has a December 2018 AOR, it may be that his eligibility has already been reviewed or maybe it hasn't. The best way to find out right away is by calling IRCC (there's a guide on how to call IRCC in my signature), or you can order GCMS notes but you'll have to wait 30 days to receive them.
Proof of work experience
Purpose
To prove each work experience claim and to validate that the applicant meets program requirements
Document requirements
Proof of work experience
Purpose
To prove each work experience claim and to validate that the applicant meets program requirements
Document requirements
- The personalized document checklist in applicants’ online account prompts the applicant with an upload field for each work experience declared.
- At the completeness check, the processing office determines only whether the required documents are included. The validity or fraudulence of the information is assessed only if and when the application is placed into processing.
- a reference or experience letter from the employer, which
- should be an official document printed on company letterhead (must include the applicant’s name, the company’s contact information [address, telephone number and email address], and the name, title and signature of the immediate supervisor or personnel officer at the company),
- should indicate all positions held while employed at the company and must include the following details: job title, duties and responsibilities, job status (if current job), dates worked for the company, number of work hours per week and annual salary plus benefits; and
- if the applicant is self-employed, articles of incorporation or other evidence of business ownership, evidence of self-employment income and documentation from third-party individuals indicating the service provided along with payment details (self-declared main duties or affidavits are not acceptable proof of self-employed work experience).
