You might need your paystubs to show at your 485 interview as proof that you are working.
You may need them to respond to an RFE on your EAD.
Or you may just need them to file your taxes each spring!
All partner employers of BDV Solutions offer paystubs. Most will offer online access to paystubs. You will receive your first paycheck and paystub soon after you start working. Most employers pay either weekly or every two weeks. Your very first paystub might take longer to receive since you will be new in your employer's system.
On your first day of work, you should ask your supervisor how to receive paystubs or sign up for online access. Please notify BDV Client Services if you have any issues.