Yes, any I-485 applicant is entitled to file I-765 to apply for an EAD and/or file I-131 to apply for Advance Parole, for free. And it is always recommended for an I-485 applicant to apply for these two to have the ability to work and/or travel in about 90 days in case the I-485 takes much longer (it can take up to a year or more in some cases).