Gaps in work history can put recruiters off a CV. Usually there is an explanation for this, ie., maternity, relocation, travelling etc. If this is the case, it is important to say what you were doing during the gap period. This helps to not only account for your time but also to give the recruiter an idea of who you are as a person and builds your personality through the CV.

Likewise, recruiters are also interested in why you left a company, especially if you have been there for a long time, it may be beneficial if you put in some brief details about why you left your previous employment, or why you are looking to leave. This all helps to build the picture of who you are as a candidate and helps the recruiters and hiring managers to have a bit more of a feel for your personality.