The Three Systems in Brief
All three are applicant tracking systems (ATS): software an employer uses to post jobs, collect applications, and move candidates through hiring. You usually cannot choose which one you apply through. The employer has already picked it, and has configured it for its own process.
- Workday Recruiting is part of Workday’s wider human resources software suite. Workday also sells HiredScore, an AI add-on that grades applicants against a job’s requirements.
- Greenhouse is a standalone recruiting platform: each job has an interview plan made of stages, and employers write their own application questions. Its Real Talent add-on includes AI talent matching and fraud detection.
- Oracle Taleo is Oracle’s long-standing recruiting product. Its documentation describes requisitions with prescreening questions, required and asset criteria, and optional disqualification questions. Oracle also sells a newer recruiting product as part of Oracle Cloud HCM, so an Oracle-hosted application is not necessarily Taleo.
Workday vs Greenhouse vs Taleo: Comparison Table
What each vendor’s documentation says about the parts of the process that affect your resume. Where a feature is optional or configurable, that is noted, because what you experience depends on the employer’s setup.
| Topic | Workday Recruiting | Greenhouse | Oracle Taleo |
|---|---|---|---|
| Resume upload and parsing | Resume parsing fills application fields from your resume. Workday’s guide says it does not fill the Skills or Languages fields, and that results vary with resume format and word order. | Parses uploaded resumes into the candidate profile. Its support article lists images, tables, columns, headers and footers, and files over 2.5 MB among causes of a failed parse. | Its documentation describes candidates pasting resume text on a career site; the system parses it to pre-fill the application and attaches it as a text file. |
| Application workflow | Employer-built application steps and questionnaires, such as eligibility and work authorization questions. | Job post questions written by the employer, then stages in each job’s interview plan, starting with Application Review. | Requisition-based application flow with prescreening questions and competencies set by the employer. |
| Automatic actions | Questionnaire answers can be scored; Workday’s guide gives an example of an ineligible candidate being eliminated on those scores. | Optional application rules can auto-tag, auto-advance or auto-reject candidates based on answers to job post questions. | Disqualification questions are a setting the employer enables. Candidates can be asked to explain specific answers. |
| Keyword and requirement relevance | Recruiters search and filter. The optional HiredScore add-on grades applicants against employer-defined requirements. | Recruiters search and review. Optional Talent Matching sorts resumes into Strong, Good, Partial or Limited against a hiring team’s weighted calibration. | The ACE candidate alert groups candidates by how many Required and Asset criteria they meet, to decide whose files to review first. |
| Who makes the decision | Workday states that final hiring decisions remain with the recruiter and hiring manager. | Greenhouse states that Talent Matching never auto-rejects or auto-advances anyone. | The ACE alert sets review order and notifies users; the documentation does not describe it rejecting anyone. |
| Employer configuration | Application templates, questionnaires, and whether external candidates see resume parsing at all. | Questions, application rules and matching calibration, per job post. | Prescreening criteria, their weighting, and the ACE thresholds, per requisition. |
Product Capability vs Employer Configuration
Most of what decides whether an application moves forward is not "the ATS". It is a rule an employer wrote. A product can offer auto-reject rules or disqualification questions, but a hiring team has to create them, decide which answers trigger them, and attach them to a job. Two employers on the same system can run completely different screens.
That is why advice such as "Taleo rejects resumes without the exact keyword" or "Workday auto-rejects PDFs" does not hold up. The vendor documentation reviewed for this guide does not describe either behaviour. What it does describe is employer-configured screening on application answers, and optional matching features that sort or grade candidates for a person to review.
Resume Formatting That Works in All Three
The vendors’ own parsing guidance points the same way, so one well-built resume covers all three:
- One column, with standard section headings: Summary, Experience, Skills, Education, Certifications.
- Your name and contact details as ordinary text at the top of the page, not in the document header, footer or a text box.
- No tables, text columns, images, logos, icons, skill bars or word art. Workday advises resumes without images or image-based styles, and Greenhouse lists all of these as causes of a failed parse.
- Job titles written in full, such as "Senior Account Executive" rather than "Sr. Account Exec", which Greenhouse names as a parsing problem.
- The same order and date format for every role: job title, employer, location, start and end month and year.
- A text-based PDF or Word document, in whatever format the employer asks for, kept small. Greenhouse cannot parse resumes over 2.5 MB.
Workday: What to Check
Workday’s parsing fills the application form from your resume, but its administrator guide says it does not fill the Skills or Languages fields, and that results vary with your resume’s format and word order. Employers can also turn parsing off for external candidates.
- Review every pre-filled field before you submit. Correct job titles, dates and employers that came through wrongly.
- Add your skills and languages in the form yourself if the application asks for them, using the posting’s own terms where they are accurate.
- Answer questionnaire questions carefully. Employers can score these answers, and an eligibility answer such as work authorization can decide whether you move forward.
Greenhouse: What to Check
Greenhouse publishes the most specific parsing advice of the three, and its automatic actions run on your answers to job post questions, not on your resume text.
- Keep the file under 2.5 MB and free of images, columns, tables, headers and footers.
- Write job titles and employer names in full. Greenhouse notes that abbreviated titles, and company names without an identifier such as Inc. or LLC, can parse poorly.
- Treat every custom question as part of the screen. An employer can set an auto-reject rule on a specific answer.
- If the employer uses Talent Matching, a resume that cannot be read is labelled "Needs manual review" rather than scored, so clean parsing still matters.
Taleo: What to Check
Taleo’s documented screening runs through the prescreening section of each requisition: questions and competencies the employer marks as Required or Asset, and optional disqualification questions.
- Answer prescreening questions accurately and completely. The ACE candidate alert, where it is used, groups candidates by these Required and Asset criteria to set review order.
- Use any explanation box the employer offers for a specific answer. It exists so you can give context a yes or no cannot.
- If you paste your resume text instead of uploading a file, check the result. The pasted text is what gets parsed and attached to your application.
Why There Is No Universal ATS Score
There is no industry-standard ATS score that follows your resume from employer to employer. In these three systems, the closest things to a score are optional, set up for one job at a time, and measured on different scales:
- Greenhouse Talent Matching produces match categories, not a single number, and measures your resume against a calibration that each hiring team builds and weights for its own job.
- Workday’s HiredScore grades applicants against employer-defined requirements for one job, with a rationale for each grade.
- Taleo’s ACE alert groups candidates using thresholds a recruiter sets on that requisition’s Required and Asset criteria.
- A resume checker score, including the one Olyres gives you, is an estimate of how well your resume covers one job description. It is useful for finding gaps, but it is not the number any of these employers sees.
Common Resume and Application Mistakes
These cost applicants on every platform:
- Submitting without reviewing the fields the system pre-filled from your resume.
- Rushing the application questions. On all three systems, the documented automatic screening acts on those answers.
- Using a designed, two-column resume for an online application.
- Putting contact details only in the document header.
- Abbreviating job titles or using an internal title nobody outside the company would recognise, with no plain-language version.
- Sending the same resume to every posting, so the requirements a recruiter searches for are missing.
- Trying to "beat" the system with hidden keywords or a pasted job description. The parsed text is what a recruiter reads.
How to Match Your Resume to Job Requirements Truthfully
Whatever the system, the recruiter searching it is looking for the requirements in their own posting. Matching them honestly works the same way everywhere:
- List the posting’s must-have requirements, then find the line in your resume that proves each one.
- Where you have the experience, use the posting’s own wording for it, inside an experience bullet that shows where and how you used it.
- Write each certification and license in full with its abbreviation, and its status where it applies.
- Leave genuine gaps as gaps, and answer application questions about them accurately.
- Check the match against the actual posting before you apply, and again after you edit.
Workday, Greenhouse and Taleo FAQs
Common questions from applicants:
- Does Workday automatically reject resumes?
- Workday’s documentation describes employers scoring questionnaire answers, with an example of an ineligible candidate being eliminated on those scores. That acts on your answers, not your resume. For its HiredScore grading, Workday states that final hiring decisions remain with recruiters and hiring managers.
- Why do I have to retype my resume in Workday?
- Workday’s parsing fills some fields, but its guide says it does not fill Skills or Languages, and results vary with your resume’s format. Some employers also turn parsing off for external applicants. Check and complete each field by hand.
- Does Greenhouse rank or score my resume?
- Only if the employer uses Talent Matching, which sorts resumes into match categories against a calibration the hiring team sets. Greenhouse states that it does not reject or advance anyone on its own. Automatic rejection in Greenhouse comes from employer-written rules on application question answers.
- Is Taleo harder to get through than the others?
- There is no reliable evidence that one system is harder than another. Outcomes depend on how each employer configures its questions, criteria and thresholds, and on the people reviewing the applications.
- Should I upload a PDF or a Word file?
- Use the format the employer asks for. Otherwise a text-based PDF or a Word document generally works in all three. Avoid scanned or image-only files, which contain no text to parse.
- How can I tell which ATS an employer uses?
- Often from the application page itself. Its web address or footer frequently names the vendor, for example a myworkdayjobs.com, greenhouse.io or taleo.net address.
- Do I need a different resume for each system?
- No. A single-column, text-based resume with standard headings parses well in all three. What should change from one application to the next is the content, to match each posting.
Sources
Platform statements on this page come from each vendor’s own documentation, checked on 18 October 2026. Each link opens in a new tab. Features change and are configured differently by each employer.
- Workday Administrator Guide. “Concept: Resume Parsing”: fills fields from a resume, does not fill Skills or Languages, results vary by format and word order, best without images, can be hidden for external candidates.
- Workday Administrator Guide. “Setup Considerations: Questionnaires for Recruiting”: eligibility questions such as work authorization, and point scores that can eliminate ineligible candidates.
- Workday. “AI Recruiting Software” (HiredScore) product page: grades against employer-defined requirements; final hiring decisions remain with people.
- Greenhouse Support. “Unsuccessful resume parse”: formatting causes of failed parsing and the 2.5 MB limit.
- Greenhouse Support. “Application rules overview”: Auto-Tag, Auto-Advance and Auto-Reject based on answers to job post questions.
- Greenhouse Support. “Talent Matching FAQ”: match categories against a weighted calibration, no auto-reject or auto-advance, unreadable resumes sent to manual review.
- Oracle Taleo Enterprise documentation. “ACE Candidate Alert”, “Questions and Competencies: Permissions and Settings”, and “Plain Text Resume Parsing for Mobile Devices”.
See What Any ATS Would Find in Your Resume
Whichever system an employer uses, the recruiter searches for the requirements in their own posting. Paste that posting and your resume into the Olyres ATS Checker to see which ones your resume already supports and which are missing.
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