United's new contract pays a pretty hefty premium for an FDP extension. I do not support this idea because pilots will see the money and extend when they are actually fatigued. This is a great discussion because a lot of times we are faced with having to cut off our own pay. Case in point, I did not accept an extension causing me to miss my greenslip the next day. I lost out on the pay, but I made the safe call by not endangering the crew or passengers, and I lived to fly another day. Its up to each pilot to assess their fitness for duty and if you feel like the company needs you, dont fret. They can ALWAYS find another crew to fly the airplane. Theyre very good at this.