My in-laws applied for TRV (paper-based) on Dec 1, 2014 via VFS-Bangladesh and got the Visa in 2 weeks from CHC-Singapore. Before I list the required docs, I want to brief you a little re: their situation.
Background:
My in-laws visited Canada once before my wife came here as an immigrant. My father-in-law is a professor/physician and my mother-in-law is a housewife. They are well off, own a number of properties and visited many countries (including US and Canada). Initially, my mother-in-law wanted to apply alone in order to stay for 4~6 months during my wife's prenatal period. But when the plan got delayed; I advised them to apply together as they were more interested to be present when their grandchild gets born. Besides, my mother-in-law is financially dependent on her husband (on paper).
Here's what I provided:
1. A notarized invitation letter which looks like an affidavit containing copies of our PR cards (prepared by my solicitor friend)
2. A letter from our family physician stating my wife's due date
3. My current employment verification letter (original)
4. #2 of my most recent pay stubs (copy)
5. My T4 for 2013 (copy)
6. 6 months bank statements (original)
7. Our house possession info (copy)
Here's what my in-laws provided:
1. Required forms + photos + fees + passports
2. My father-in-law's employment verification letter and leave-in-advance confirmation (for 4 weeks)
3. Their bank statements
4. Some of their property docs (copies)
FYI, I did not provide any insurance for them. And they showed in the application that they would stay only for 1 month with us (during delivery). If you want to see their application timeline, here's one of my previous posts:
Canada TRV application from Bangladesh - Singapore timeline