It's hard enough running a business that has a well established office space - where everything has its place and there's a place for everything. Adding an office relocation into the mix? The possibility of a chaotic mess is high unless you plan the move very well.
First off, hire removal experts. Whenever there is a need to relocate it is always good to make use of the expert services of the movers and packers. They can direct you on what packaging supplies you may need such as tape and boxes, tubing etc. The deftness and the perfection with which they do their work cannot be achieved by yourself and your employees - and it would result in the inevitable damage and breakage of some of your office equipment. Furthermore, asking your employees to help with the move might make them feel a little resentful - they weren't employed by you to move boxes after all.
One of the main concerns regarding the movers is that you need to confirm their reliability and ensure that they have a good reputation. As you are entrusting your office equipment with the removal company you hire, you really need to do your research. Also make sure that the movers who come to your service are "in house" and are not outsourced by the removal company.
Another factor to take note is that the breakable items should be packed separately and each one of the items should be tightly packed and if possible carry them yourself. Ensure every box is labelled clearly so the unpacking will be a lot easier.