OET Case Notes to Letter: Vocabulary for Selection and Compression

Turning case notes into an OET letter is not a copying exercise. Notes are compressed for the writer; the letter is organised for a reader. The vocabulary challenge is deciding what the reader needs, grouping related facts, making time relationships explicit, and removing shorthand without changing its meaning.

OET Writing is profession-specific. The supplied task tells you the reader, purpose, and required document. Official materials show that letter purposes and audiences vary, so no single referral-letter template can govern every task or profession. The task instruction—not a memorised structure—sets the communication job.

This guide applies six canonical language tools: document, synthesize, subsequent, frame, account for, and put differently. The worked notes are fictional and limited to scheduling and communication. They do not offer health advice or model a clinical decision. Continue at the OET vocabulary practice hub or browse the Exam English hub.

Start with the reader-purpose pair

Before selecting a note, complete this sentence:

I am writing to [reader] so that they can [purpose supported by the task].

The same fact may be essential for one reader and irrelevant for another. An administrative coordinator may need contact availability and language-access preferences. A professional receiving a transfer may need a different set of details. Relevance is relational: it depends on what this reader needs to do.

Create three labels:

• MUST: necessary for the stated purpose;
• SUPPORT: helps explain status, chronology, or responsibility;
• OMIT: does not help this reader complete the stated task.

Do not confuse “interesting” with “relevant.” A detail can be accurate and still weaken the letter by distracting from its purpose.

Document: record, do not prove

As a verb, document means make a durable record of relevant details. It does not automatically mean prove, approve, or resolve.

“The notes document two unsuccessful contact attempts.”

That sentence says the attempts were recorded. It does not establish why contact failed or who was responsible.

Useful patterns include:

• document the request / discussion / action;
• the notes document that...;
• a well-documented preference.

In your letter, distinguish recorded fact from interpretation. The notes document that Ms Vale requested an afternoon call is evidence-bounded. Ms Vale refuses morning contact changes a stated preference into a stronger behavioural claim.

Also separate document, report, and file. To document is to create or support a durable record. To report is to communicate to a recipient. To file may mean store or formally submit. The actions can co-occur, but they answer different questions.

Synthesize: combine facts into a coherent whole

To synthesize information is to combine material from multiple parts or sources into one coherent whole. It is more than listing notes in their original order.

Suppose the notes say:

• 09 Sep: client asked for written confirmation;
• 11 Sep: email returned because address incomplete;
• 12 Sep: address corrected by phone;
• task: ask coordinator to resend confirmation.

A synthesis might be:

“Please resend the written confirmation to Ms Vale's corrected email address, as the message sent on 11 September was returned because the address on file was incomplete.”

The sentence combines purpose, current status, and relevant chronology. It does not invent a reason for the original data error.

Synthesize and summarize overlap, but they are not identical tasks. A summary states important points briefly. A synthesis combines separate details into a meaningful whole. An effective OET letter often does both.

Subsequent: order events without inventing cause

Subsequent means later in time. It is useful for understanding notes, though ordinary connectors may sound more natural in the final letter.

“A subsequent call confirmed the correct address.”

This establishes sequence, not causation. If a missed appointment appears before a changed phone number in the notes, you cannot say the phone change caused the missed appointment unless the notes make that connection.

Build a timeline before drafting:

request → attempted contact → returned message → corrected details → current request

Then compress only after the order is clear. Useful final-letter markers include initially, later that day, since then, following the call, currently, and to date. Each makes a different time relation explicit.

Beware of since, which can mean time or cause. Since 12 September marks a starting point. Since the address was incomplete gives a reason. If the relation could be misread, choose because or from [date].

Frame: organise facts around the letter's purpose

To frame information is to present it within a particular context or interpretation without changing the facts. In case-note transformation, the task should frame the letter.

If the instruction asks the coordinator to resend a document, open with that request. Do not frame the letter as a general history:

Weak opening: “Ms Vale first attended the service in March and has had several contacts.”

Purpose-led opening: “I am writing to request that Ms Vale's appointment confirmation be resent to her corrected email address.”

The first sentence may be true, but it delays the reader's job. The second frames the selected facts around an actionable communication purpose.

Framing must not become spin. Do not present an unconfirmed explanation as a fact or suppress a relevant constraint because it complicates the narrative.

Account for: explain only what the notes explain

Account for can mean explain an observed result by identifying relevant circumstances.

“The incomplete address may account for the returned email.”

If the notes explicitly connect those facts, the phrase can be accurate. If they merely appear next to each other, preserve uncertainty. And if the note says the system recorded “invalid address,” do not expand that into a detailed technical failure.

The phrase also means form a share of a total: telephone requests accounted for half of all enquiries. That numerical sense is less likely in a short letter but common in reports.

Do not confuse account for with take into account. Please take her work schedule into account asks the reader to consider it. It does not say the schedule explains a past event, and it does not guarantee a preferred appointment.

Put differently: translate shorthand without adding content

Put differently introduces the same central idea in other words. You may not need to write the marker itself, but the reformulation move is central to case-note transformation.

Note: “pref. written contact; phone after 15:00 only”

Letter: “Ms Vale prefers written communication and is available by telephone after 3 p.m.”

The letter expands supplied shorthand into complete language. It does not infer that she is unavailable before 3 p.m. for every purpose unless the note says “only,” as this fictional note does.

Never resolve an abbreviation by guessing. If FU appears but the source does not define it, use the wording supplied elsewhere in the task or avoid expanding it until its meaning is clear. A confident wrong expansion is worse than a faithful paraphrase.

Tense is a status system

Case-note dates tell you not only when something happened but whether it remains current.

• past simple: completed event — “The office called on 12 September.”
• present perfect: past event with current relevance — “The office has updated the address.”
• present simple: current status — “The confirmation remains outstanding.”
• future or modal: planned or requested action — “The coordinator will call”; “Please could you resend...”

Do not turn planned into completed. To contact client Friday in notes may represent an instruction or plan; it is not automatically The client was contacted on Friday. The task context and date decide.

Similarly, distinguish ongoing, pending, and completed. Pending means awaiting completion or decision. Ongoing means continuing. Completed means finished. These are not stylistic variants.

Fictional case notes

The notes below are original language practice. They describe no diagnosis or treatment.

Client: Maya Vale Purpose supplied by task: Write to the appointment coordinator requesting renewed written confirmation.

• 03 Sep: requested appointment; prefers email confirmation
• 05 Sep: provisional date offered — 19 Sep; exact time pending
• 06 Sep: confirmation email returned; address recorded as mayavale.example.com
• 09 Sep: no written confirmation received; client called service
• 09 Sep: correct address supplied as maya.vale@example.com
• client available for calls after 15:00 only
• coordinator to confirm exact time by 13 Sep
• unrelated note: attended information session in March

Step 1: select

MUST: corrected email, provisional appointment date, exact time pending, requested confirmation, response date. SUPPORT: earlier email was returned; telephone availability may help contact. OMIT: March information session, because it does not support the requested communication action.

Step 2: group

Group by reader need, not note order:

1. purpose and client identity;
2. current appointment status;
3. reason written confirmation is outstanding;
4. corrected contact details and availability;
5. requested action and expected time.

Step 3: transform

Dear Appointment Coordinator,

I am writing to request that written confirmation of Maya Vale's provisional appointment on 19 September be sent to her corrected email address, maya.vale@example.com. The exact appointment time remains pending and is due to be confirmed by 13 September.

Ms Vale originally requested email confirmation on 3 September. The message sent on 6 September was returned because the address then recorded was incomplete. She supplied the corrected address by telephone on 9 September after reporting that no confirmation had arrived.

Please resend the confirmation when the appointment time is available. If telephone contact is required, Ms Vale is available after 3 p.m.

This mini-letter is intentionally administrative and fictional. It demonstrates transformation, not a universal OET structure. The actual task may require different content, tone, organisation, and profession-specific language.

Compression without distortion

Good compression removes duplication, not meaning.

Notes:

• 10:05 caller asked whether booking active
• 10:08 staff checked system
• 10:10 staff confirmed booking active

Compressed:

“After checking the system, staff confirmed that the booking remained active.”

The minute-by-minute times are unnecessary unless timing itself matters. The sequence and confirmed status remain.

Unsafe compression often deletes a qualifier:

Note: “possible morning slot; not confirmed”

Distorted: “A morning slot has been arranged.”

Preserving possible and not confirmed matters more than making the sentence compact.

Common transformation failures

• Copying every note: the reader must search for the purpose.
• Writing in note order: chronology may replace useful grouping.
• Guessing an abbreviation: invented meaning enters the letter.
• Changing status: provisional becomes confirmed, or planned becomes completed.
• Changing responsibility: the wrong person appears to own the next step.
• Adding causation: later events are presented as consequences without evidence.
• Using decorative vocabulary: complexity makes a simple request harder to act on.
• Applying one template universally: audience and purpose vary by task and profession.
• Adding clinical judgment: selection and language do not authorize treatment recommendations.

Controlled practice

Take an official sample task and build a five-column grid: note, relevance, group, tense/status, and final paraphrase. Require every included sentence to answer one reader question: Why am I receiving this? What is current? What led here? What do I need to know? What am I being asked to do?

Then compare the source and letter word by word. Circle modals, negatives, dates, quantities, and responsibility verbs. If any disappeared or strengthened, repair the transformation.

For more practice synthesizing evidence into controlled professional English, try Lyra Practice.

Sources

• OET sample tests by profession — OET
• OET Writing preparation resources — OET
• OET Test Teachers Handbook — OET
• How OET uses inclusive and accurate language — OET

Related

• PTE Summarize Written Text: One-Sentence Reporting Verbs
• Cambridge C2 Writing Part 1: Evaluate and Synthesize Two Texts
• IELTS General Training Writing Task 1 Letter Vocabulary
• Build a Workplace Collocation Notebook

Lyra Practice is not affiliated with or endorsed by OET or Cambridge Boxhill Language Assessment Unit Trust.