The reality is, there are no “rules” when it comes to résumés; and this is a great thing. Clients always tell me that they want to stand out. Well, the only way to stand out is to write your résumé differently than everyone else.
The point of a résumé is to help you land an interview. That’s it. It therefore needs to highlight achievements and accomplishments. Also, it does not need to be a full list of every position that you've held over your career.
It is neither necessary nor required to go back to the very beginning of your work history on a résumé. In fact, in some cases, it can actually be detrimental. For example, I work with clients of all different ages. Many job seekers in their 50s are very concerned about ageism, which sadly, is a real issue in many companies. An interviewer is not allowed to ask someone how old they are and a job seeker has no obligation to disclose that information on their résumé. A job-seeker’s first or second job 25 or 30 years ago is not relevant to the job they are seeking in 2018. Yes, that job helped form them into the professional they are today, but that does not mean that it still belongs on a résumé.
Additionally, if you are at least 10 years removed from college, take your graduation dates off of your résumé and your LinkedIn profile. A degree is a degree; the date is irrelevant.
As a general guide, if you have been working for 10 years or less, keep your résumé to one-page max. For all others (with the exception of academic CVs, etc.), keep your résumé to two-pages max. I've worked on plenty of résumés and this can be quickly accomplished by either eliminating weaker bullet points within a position or by simply eliminating older jobs from your past.
Your résumé is your marketing document, not a legal document. It should be accurate but also simply relevant to what you have accomplished and how those accomplishments can best serve you in your next opportunity.
For more information on writing an effective résumé, please visit my résumé page here.