No, there is no W1 or Week 1 anywhere, there is a Month 1 though?
This is my 2nd month of employment at the new company and the first payslip is exactly the same as this one.
You should ask your payroll department if they have received a certificate of tax credits for you. I would do so asap as these used to be difficult to get from Revenue toward the year end.
I started in the middle of the first month and the payslip at the end of the month had an indicator for emergency tax. The last 2 full months' payslips do not have that, it just has "Month 1".
I will inquire about the certificate though, thanks for the input!