Work experience proof - post ITA

[sriiram]

hello,

i applied under FSW and recd ITA,

for my work experience ( store manager ) between "xx - xx 3 years
noc 0621 - retail and wholesale manager.

I used to be a manager for an fashion eye wear store, for the proof of work experience i have the following details.
Offer letter-
Promotion letter -Salary grade
Reference letter-
pay slips.

I received my salary by cash most of the period and cheque rarely.
will i be required to submit more documents?
NOTE * i submitted the similar work profile when i came as student in '14.
I am an inland FSW - international student on work permit.

score - 486. ITA recd.