Company cultures are all different. Some are more traditional and value consistent hours. If there is no expectation of working longer hours and you can peace

Company cultures are all different. Some are more traditional and value consistent hours. If there is no expectation of working longer hours and you can peace out at 5pm without a thought, then some people are ok with the understanding that they need to be in on time. However as you advance in your career, odds are you will find you prefer flexibility (because life rarely runs on schedule), and more importantly, you will likely value working somewhere that pays you to get a job done, not fill a seat. One of my biggest requirements now is having that flexibility--once you have it, it becomes VERY hard to go back. More importantly, it is increasingly common for companies to want you to be there at a fixed time in the morning, but then work unknown late hours. That seems a bit off to me for many reasons. In any case, it is worth a discussion with your boss as to their expectations and reasons for needing you to be present at a certain time. Don't do it in a way that comes off as questioning their direction, but try to do it in a way to help gain perspective on where they are coming from. Personally, my brain doesn't switch on before ~10-10:30am, so that's wasted productivity. I learned that I do well at companies that treat their employees like adults who can manage their time and work when they will be productive. As a result, I tend to get in ~10am or a little after, and leave around 6-7pm, and then typically wrap some things up from home for an hour or two at night if needed. I put in the late nights and weekend when it is necessary, and the flexibility my company offers means I don't have to worry about punching the clock or marking a time card...I can simply focus on getting my work done to the best of my ability to deliver the results they pay me for.