When it comes to presenting your work experience on a resume, noting job responsibilities is a must but including accomplishments is what can really help separate you from your competition. Sometimes it can be initially hard to identify accomplishments. Performance reviews or letters of recommendation are two good sources in getting started. Another way to jog your memory is to reflect about jobs that you held for a longer period of time, such as several years or more, and then to think about the things you did when you first started vs. what you did later on during your employment. Often those periods of growth and change can be a source for identifying accomplishments.
Many things can conceivably qualify as accomplishments—promotions, awards, certifications, sales increases, process improvements and cost reductions are just a few. Ultimately it all comes down to creating value in the minds of readers. Noting basic job responsibilities with sufficient detail can have solid implied value but including accomplishments that describe specific outcomes can really help you stand out as a candidate. Finally, what are especially effective are accomplishments that include numbers, such as with sales increases or cost reductions.