Neither of those examples include monetary compensation for the kidney. The paid time off work should be a given for someone who is donating a kidney, but they are being compensated by their employer at the same rate they would have been had they just gone to work. Someone who makes $15/hr would actually "make" less off the kidney donation than someone making $50/hr, but either way they could have just not donated the kidney and ended up with the same amount of money...and their kidney.
Neither of those examples include monetary compensation for the kidney. The paid time off work should be a given for someone who is donating a kidney, but they are being compensated by their employer at the same rate they would have been had they just gone to work. Someone who makes $15/hr would actually "make" less off the kidney donation than someone making $50/hr, but either way they could have just not donated the kidney and ended up with the same amount of money...and their kidney.