The whole point is that the extension can be used for “unforeseen OPERATIONAL circumstances” if need be, such as delays, re-position, etc. If one chooses not to accept this and the company makes you call fatigue, that’s completely acceptable because there is no other valid excuse. Why are you fatigued? Because I’m exceeding my normal duty time and I’m exhausted...clear cut. If the company takes punitive action (lost pay, discipline, etc.) this is 100 percent completely UNacceptable because now they’re making the pilot choose between accepting punitive damages OR operating an aircraft under a fatigued mindset. 117 was created as a proactive measure, NOT a reactionary measure.