Office removals are generally more complicated than home removals. That is why it is usually more cost effective to hire the help of an office removals company. With their help you will have minimal downtime at the office. You won't even have to miss a single day of business operations if the move is well-planned. That is why you and the removals company should work together on an office moving plan.
All employees must also be informed about the move in detail. In fact, a memo or a moving guide should be issued to make everything clear. Special and big equipment is usually handled by the removals company. Some employees would be assigned to secure company files though. They can also help pack office supplies and relatively small and non-delicate items. Each employee should also be responsible for their personal stuff in their desks.
The office removals company could be responsible for the arrangement in the new office. Of course, the office plan is usually approved by your office first to ensure that you will be able to work efficiently in your new office. Items not used in daily operations are moved first. Then the final moving day is scheduled so that the next business day would be done in your new office. The removals company can work after office works to facilitate this. You could also have employees do overtime. It would still be worth it though as long as you don't miss a single client during the move.