How to Pass an In-Basket Exercise: Sort, Delegate, 45-Minute Plan

An in-basket test (also called an in-basket assessment, or an in-tray exercise in the UK) is a job simulation: you play someone new in a supervisor's job and work through their inbox of emails, memos, reports and calendar entries against the clock. The US Office of Personnel Management describes the in-basket test as a frequently used assessment center exercise: applicants "play the role of a person new to the job" and "read and react to a pile of memos, messages, reports, and articles" (OPM, Assessment Centers).

Our approach, in one line: follow the test's instructions, find the urgent and risky items before you act, and give every item a clear decision: what happens, who does it, how they are told and by when (in a multiple-choice test, that thinking guides which choices you mark). Learn any rules or references your own preparation guide names, too. This guide gives you a minute-by-minute plan for a 45-minute inbox, the sorting matrix we use, seven delegation rules, what government employers say assessors look for, and common mistakes to check for.

If you want to see a whole inbox answered and scored first, our in-basket exercise examples guide does that. This page is about method. Independent practice. Not affiliated with any government employer, civil service commission or testing agency.

New York State Department of Civil Service sample test material; Canada Revenue Agency assessment page; San Francisco Department of Human Resources preparation manuals; all read 11 November 2026.

In-basket tests vary by employer and assessment, so check which one you face in your exam announcement or preparation guide. The official materials we read describe multiple-choice and written in-baskets; we add a third, the rate-the-actions format our simulator uses.

Our simulator mixes items that matter now, items that can wait, work to hand on or redirect, and items linked to each other; official exercises may instead use independent scenarios or different tasks. The plan below is our method for a written inbox where you choose your own order; adapt it to your assessment's instructions. Some formats prescribe their own order: San Francisco's EMS Captain exercise, for example, sets review periods and recorded interviews, and advises working on each independent item separately. The format notes further down say what changes.

The four official sources we read give different kinds of evidence: OPM lists what assessment center exercises can measure, New York State publishes a sample key, the CRA names the competencies it scores, and two 2010 San Francisco manuals describe specific public-safety exams (useful on method, not a rule for a general office supervisor exam). The OPM page lists what assessment center exercises can measure: interpersonal skills, oral and written communication, planning and evaluating, and reasoning and problem solving. The Canada Revenue Agency names the competencies its supervisory in-basket scores: Create vision and strategy, Mobilize people, Achieve results and Client-oriented, each out of 5. San Francisco's Sheriff's Captain manual lists abilities that include knowing "when to take action and what type of action is appropriate", setting "an appropriate and efficient course of action for self and/or others", and anticipating problems "to be proactive rather than reactive".

The clearest look inside a key is the New York State sample. Its first question asks which of three memos you would deal with first. The keyed answer is a staff member's complaint about a colleague, with a transfer request threatened, not the colleague's own memos about workload and a training idea: those "will require attention, but are not as critical". In the next section, the keyed first steps are to review the colleague's work records and the unit's workload, before you talk to him; asking around the office scores nothing. In other words, the key rewards spotting the real problem, and checking facts from records before you act.

Two things stand out. Problem analysis and judgement appears in three of the four documents (the CRA page names leadership competencies instead), so an answer that misses the real issue is unlikely to do well. And priorities and planning recur: OPM names planning, the NY State sample asks which memo is most urgent, and the Sheriff's Captain manual lists planning and knowing when to act. Our practical advice: identify the urgent issues before you choose actions, while following any sequence your assessment sets.

This is our suggested plan for a 45-minute written inbox of 12 to 15 items. Our simulator uses the same time and item count, but asks you to rate actions rather than write them: use the answering blocks for the ratings and the last minutes to review. Official in-baskets vary (the CRA's runs 90 minutes), so the tool after the table scales the 45-minute time shares to the length you enter and uses your item count to work out per-item pacing. The shape matters more than the exact minutes: about a third of the time reading and sorting, about half answering, and the rest checking.

Two habits make the plan work in our simulator, and in any written inbox where you may choose your order. First, finish the skim before answering, even an easy item: the item that changes everything is often near the bottom (a cancelled meeting, a complaint that explains another memo). Second, check the clock at minute 33 (or its scaled time): if you are still on the urgent items, keep some time for clear, short actions on the rest rather than leaving them untouched. In a multiple-choice test, use the required answer format; wherever an order or timing is prescribed, follow it.

During the skim, put every item in one box. The matrix is ours: it is the common urgent-and-important grid with one extra row, because in an in-basket the question is not only when to act but who should. The verbs in the last column are the five decisions you will write.

Three checks catch most sorting errors. Risk, not rank: judge priority by risk, urgency and consequences, not by who sent the item; an immediate safety hazard reported by a clerk can come before a routine request from the director. Judge people problems on their facts: in the NY State sample, the keyed first memo was a staff complaint with a transfer threatened, ahead of a colleague's workload memo and training idea. Look for links: if two items mention the same person, date or problem, check whether they affect each other, but keep their priorities and actions separate where they differ, and follow any instruction that items are independent.

Delegation runs through almost every supervisor in-basket. San Francisco's Sheriff's Captain manual asks, for every scenario, what you would do and to whom you would communicate, and lists "reviews, schedules and assigns duties" among the tasks (Sheriff's Captain manual). The rules below are ours, written for a general office supervisor.

Two short items of our own, one on sorting and one on delegating. They are illustrations, not items from any employer's exam. For a full inbox answered and scored, see the in-basket exercise examples guide.

Each row ties a common mistake to what the official materials say, where they say it. The fixes are ours.

Do one timed inbox early in the week, with the plan above, and mark it honestly: which items did you answer out of order, which delegations had no deadline, which items were blank? Then do the drills: skim 12 items in 8 minutes without answering any; write five delegation notes against the rule list; take one people problem and list any immediate safeguards, the facts you need and who you would speak to, privately. End the week with a second timed inbox. Learn the format of your own exam from its announcement: the length, the number of items, and whether you write or choose.