You should receive two receipts from the TSC. One that accepts the Cancellation of Removal Application, and one that purports to treat it as an I-485. Since, if you win, you gain lawful permanent residence, the application is treated by CIS as an application for adjustment of status.
You will be eligible for a work card once you have submitted the EOIR 42B to the IJ and the Acc, and had your receipt stamped received by the Judge. Then you can file an I-765 based on pending adjustment under (c)(9).