For those who are looking for a reference letter format, I have drafted one and used this for me as well. This is in line with the requirement that has been mentioned in the OINP Application Guide (
http://www.ontarioimmigration.ca/en/pnp/OI_PNP_EE_CAPITAL.html). Please feel free to tewek it to meed your requirement.
Reference Letter Format
Date: _____________
To Whom it May Concern
This is to certify that Mr. ____________ (Name) is currently employed with __________ (Company Name) in ___________ (Location, Country).
Details of his employment are given below:
•   Designation:
•   Date of Joining:
•   Employee ID:
•   Type of Employment (Full time/permanent/part-time):
•   Hours of Work/Week:
•   Department:
•   Reporting Manager:
•   Annual Salary:
Duties and responsibilities handled by ___________ (Name) are as follows:
• 
• 
• 
• 
• 
If you have any questions, please feel free to contact us.
For (Company Name)
<Signature of the Referee>                                    <Company Seal>
<Name & Designation of the Referee>
<Contact No. and Email of the Referee>