Your next employer will want to know why you have had three jobs in three years but whether they see it as a problem will very much depend on how you tell your story and the reasons you give for moving on in a relatively short period of time.
We now live in a time when employees are no longer expected to stay in a job for life, nor does the employer expect to offer that level of security to employees anymore. So, change works both ways.
Having said that, you must bear in mind that a future hiring organisation may be reluctant to invest their time in someone who might appear initially that they can’t commit to anything for longer than 9 or ten months stints at a time so you will need to really work on ‘’what you can offer’ them and give clear examples of achievements in your CV and cover letter.
Why it’s important to understand what you want first before applying for your next job
If you are in the process of applying for jobs you need to spend time getting to grips with your true needs, first. Self-awareness is really important in job search and so I would suggest you get some clarity around the things you really want to do and start to apply to organisations that can give you the environment and opportunities you really want, enabling you to settle in your job role for longer so that you can plan your next move with a full understanding of what you want from the job first.
If these are jobs where you were building experience soon after full-time education you should build your story around getting experience and what attracted you to the roles as well as what you learned as a result.
How to present your experience as a benefit to your next employer
If you are a professional of some years and this looks like a blip then you do need to come up with solid reasons for taking each role, linking the skill levels you gained i.e. What you learned at each job and why you left for better opportunities. Most importantly you should discuss how you can bring this experience to the role you are applying for. You should also weave in how you manage change and working with new stakeholders which are skills you learn from having worked in several new environments over a short period.
Hiring managers who really understand what you can bring in terms of skills, knowledge and experience will not have a problem with your work history providing you have the skill sets to do the job and you can clearly articulate the benefits of this experience in helping their organisation meet their goals.
This post has been adapted from an earlier post answered on http://www.quora.com