Employee Self Service Portals & Pay Stub Delivery Made Simple. Printing, folding and stuffing envelopes every pay period? Upload PDF pay stubs to InStaff instead. No unnecessary features. No extravagant price tag. If your company is still distributing paper pay stubs, you're probably spending a lot of time printing, folding, and stuffing envelopes every pay period. If you're looking for a better way to deliver pay stubs after processing payroll, meet InStaff.