Or is it 5 years or 15 years? Don’t go back more than 3 jobs is another rule. Confusing? These “myth-conceptions” are promulgated by employers and recruiters who want to make their jobs easier and remove your candidacy. Age factor and resume length notwithstanding, most or all experience should be included. Why diminish marketability by excluding relevant, useful and valuable experience that would bolster your resume? Our surveys proved these ‘rules’ were 31-36% less effective, depending on which rule was used.