Hey Nik,
So far as I understood, there is no exclusive template for work experience letter. However, the points which must be included are very clear and they are as follows-
Purpose of work experience: To prove each work experience claim and to validate that the applicant meets program requirements.
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.
I agree with 13nitinsharma where he suggested to ''create a grid with the all the titles you worked in the company. Include title, start to end date and location.''
As your whole work experience comes under same NOC, it would be better if you add one more line in your letter: For your reference, Mr. Nik's position corresponds to the National Occupational Classification, NOC, XXXX.
Draft your own letter by including all the points which are the must and convince your manager to just copy and paste them in a letterhead.
Suraj