Combination (hybrid). This is the default you should build first. It runs: contact details in the body of the document, a three- or four-line summary naming the role you are targeting, a skills section, then "Work Experience" in reverse date order with three to six bullets per job, then "Education," then licences and certifications. CareerOneStop describes the combination format as including a summary section at the top and possibly a skills section, while still including a detailed work history — and says it works well for most people. For a career changer, the summary and skills do the arguing ("this is who I am now") and the dated history does the reassuring ("and here is every year accounted for"). Inside the work history, keep every bullet concrete: action verb, task, then scope in the units that job actually used.
Weak — no scope, and it opens with a dead phrase
Responsible for scheduling and answering customer queries at a busy clinic.
Strong — same job, task plus scope
Scheduled 40–60 patient appointments a week across three clinicians, and cut no-shows by sending SMS reminders 24 hours ahead.
Functional (skills-based). A functional resume opens with your contact details and summary, then groups your achievements under skill headings — for example "Project Coordination," "Data Analysis," "Client Communication" — with bullets drawn from any job, volunteer role or course. The work history shrinks to a short list of employers, titles and years at the bottom, or disappears altogether. CareerOneStop says a functional format highlights your skills and can be especially effective for transferring to a new career or industry, but also warns that with little detail on work history the resume may be misinterpreted by employers or rejected by applicant tracking systems. Use it when you know a person will read it end to end: a referral from someone inside the company, a small business where the owner screens applications, a careers fair, an attachment to a direct email. Do not use it for a large-employer online form. If you like the functional structure, a safer version is a combination resume with a longer, grouped skills section and a compact dated history still present underneath.
Chronological. The chronological resume is contact details, optional summary, then "Work Experience" in reverse date order with the bulk of the page given to your most recent roles, then education and certifications. CareerOneStop calls it a good choice for those who have a solid work history and are staying in the same field, and notes it does not work as well when you are switching careers or have significant gaps. There is still one career-change situation where it wins: when the job title stays the same and only the industry changes — a payroll administrator moving from construction into healthcare, a warehouse supervisor moving into pharmaceutical distribution. There the recent history is the argument, so lead with it and use the summary to translate the sector-specific parts.
Plain-text (ASCII) copy. This is not a different resume; it is your combination resume saved as a .txt file from Notepad, TextEdit or your editor's "plain text" export, with tabs replaced by spaces, bullets replaced by hyphens, and each line kept short enough not to wrap oddly. CareerOneStop notes that a plain-text resume, sometimes called an ASCII resume, may be required when a resume site or applicant tracking system can't read your Word-formatted resume. Keep one on hand for older job boards, for application forms with a "paste your resume" box, and for the times you need to put the whole thing in the body of an email. Read it once, top to bottom, after every edit — plain text is where stray characters and doubled spaces show up.
Federal-style resume (US federal applications only). US federal government vacancies ask for information that a private-sector resume leaves out: hours worked per week, month and year for every position, supervisor details, and full duty statements matched to the announcement. TopResume (June 2025) says a federal resume might be 3 to 7 pages long in order to fit all the required information. Treat it as a separate document you build only when you apply for those roles, and keep your 1–2 page combination resume for everything else. Requirements for public-sector applications differ by country and by level of government, so read the vacancy notice rather than copying a template.