For companies with new hires, it’s critically important to make a good first impression. If new workers have a terrible first day, their opinion of the organization may be forever tainted, and this attitude will be incredibly difficult to shift. It’s better to get it right the first time than it is to play catch up. One of the biggest mistakes managers make with new employees is not giving them time to learn and grow. Most employees start a new job because they want to expand their personal skills, and if new hires think that they are being put through a series of dull tasks, it will lead to a bad first impression. Instead of inundating them with administrative tasks and paperwork on their first day, involve them in real-life projects and allow them to hit the ground running. Make it clear that work will be challenging but rewarding. Another related mistake many managers make is that they don't make clear their expectations from the beginning. Planning exactly what new employees will be responsible for and creating a detailed timeline with milestones will keep everyone on the same page.