Only if 100% of your co-workers over-work, arrive early and stay late. I’ve worked in companies of wildly varying sizes, from 2 (startup) to 200,000 (megacorp), some of them full of very hard workers, and it has always been easy to not be first out by just meeting the minimum time obligation that I agreed to. There are usually some people working less, and the advice above was just to not be one of them, rather than kill yourself by working harder than everyone.