Views: 726 https //rpo.altera payroll.com/employee : Online Tax Forms in Employee Self Service (myESS) Required Software: Google Chrome browser and PDF View (Adobe). 1. Go to: https://rpo.alterapayroll.com/Employee. 2. Enter username & password. 3. Click Pay … Continue reading https //rpo.altera payroll.com/employee : Online Tax Forms in Employee Self Service (myESS)