Most larger companies have time tracking and pay extra hours in such cases. If that happens too often, controlling will definitely like to have a word with you.

Most larger companies have time tracking and pay extra hours in such cases. If that happens too often, controlling will definitely like to have a word with you. I worked for multiple larger corps as a freelancer and they are very strict about "8 hours per day". They did the math and know that if I work 10, they pay 2 hours for the same price, but at less efficiency.