Hi, I have been working for a company for almost 6 months and this is a contract position. I have all my paystubs and I will get a record of employment and T4. But, my manager neither wants to give me a letter of employment nor put a signature on my proposed one. So, in this case, how would I prove this 6-month working experience to IRCC when applying for PR under CEC? I know this letter is pretty important, but in my worst case, I would not be able to get it. How should I do? Thanks.