Shift swapping allows employees to change one or more of their shifts for one that is more suitable for them. They do this by trading it with a colleague and in exchange will agree to work one of their shifts at a time that suits them.
A shift swapping policy is a way for an employer to build shift swapping into the services they provide for their employees. It will dictate the rules and regulations around shift swapping and will give a fixed structure for how swaps can take place.