Pf should also be deducted from your salary, that will be good for showing work experience

Company employee size is below 20 so pf ia not there.

Security engineer

No startup functions in a way where they even cant provide salary slip or offer letter. 
 But if you are paying taxes of full time employ without proper document then you should ask for it as payslips are the direct proof of your employment.

Hi grapevine folks,

I had joined a startup in jan as an intern and had received joining and offer letter.

Now in july I have become full time and have received

Hi grapevine folks,

I had joined a startup in jan as an intern and had received joining and offer letter.

Now in july I have become full time and have received an increment letter and not an offer letter. Does it create any problem in showing my work ex.

And since it is a startup I dont receive any payslip and directly receive money in my bank account.

Can I use my bank account statement instead of payslips to prove my work ex.

I am asking this with the view of proving my work ex in a b-school.

Increment letter instead of Offer Letter