If you work for an hourly wage then they will still expect certain productivity. I would guess so many visits in a certain period of time or a certain number based on acuity of care, allowing so much time for each level of acuity and travel time. If you are paid per hour you also should get mileage. Investigate not only how they pay but what it is based on. If paid by the visit, will they tell you how much time you are required to stay in the home for each visit? An agency once paid a PT per visit but they neglected to set it up in a structured manner. This PT started making 14-15 visits per 8 hour day and raking in the dough. Also, the agency may pay differently based on how the agency is reimbursed by the payer.
Unfortunately, I am unable to answer your question directly because there are too many variables. Try to find out more if you can.