Dawn Dugan specializes in writing books, articles, white papers, reports and special communications for the human resources industry. She is the co-author of Effective Executive Compensation, which was published by AMACOM in 2008. Read more...
A punctual arrival shows that you are organized, value your work, and are considerate of your co-workers' time.
In addition, be aware of the company culture as it relates to the workday. When do people typically leave? Even if the workday is advertised as 9 to 5, leaving at 5 won't score you any points if everyone else is staying until 6.
Follow the lead of your colleagues in the beginning. Once you are secure in your position you may be able to ask for more flexibility.