Here are my posts on the Kasambahay Law:
Kasambahay Law: Ang Batas Kasambahay (IRR, Contract and Payslip)
Kasambahay 101: Pag-Ibig Fund Registration
Kasambahay 101: SSS Registration
Kasambahay 101: PhiHealth Registration
Kasambahay 101: The Law – broken down (Its a fun read, promise!)