How to Onboard a Junior Writer onto Existing Client Brands in One Week

A new junior writer joins, and the client calendars do not pause. The usual result is either a month of the writer sitting on the sidelines, or a week of drafts that a senior has to rewrite from scratch. Neither is good for the writer or for your margins.

This is a five-day plan that gets a junior writer producing usable drafts for existing client brands by the end of week one, with clear criteria for when they can draft without a senior rewriting every line.

Before day one: prepare the handover pack

The week only works if the material is ready before the writer arrives. Budget two to three hours of a senior's time the week before. For each client brand the writer will cover, gather:

• Brand snapshot (one page): what the client sells, to whom, and why customers choose them
• Voice brief: tone, words they use, words they never use, formality level, emoji and hashtag rules
• Ten approved posts: a mix of platforms, ideally the posts the client liked most
• Three rejected or heavily edited drafts: with the client's comments, so the writer sees where the line is
• Current content calendar: next four weeks, with themes and campaigns marked
• Contacts and rules: who approves, what needs extra checking (claims, pricing, legal), what is off-limits
• Tool access list: logins for the calendar, drafting tools, design tool, shared drive

Rejected drafts are the most useful item and the one most often missing. Approved posts show what good looks like; rejected ones show what the client will not accept, which is harder to guess.

Limit the writer to two or three client brands in week one, even if they will eventually cover more. Depth on a few brands beats a shallow pass across all of them.

The voice brief template

If a client does not have a written voice brief, write one before the writer starts. Keep it to one page.

CLIENT: [Name]
ONE-LINE POSITIONING: [What they do, for whom, why them]

AUDIENCE: [Who reads their posts; what they care about]

TONE (pick 3): [e.g. direct, warm, expert]
NOT (pick 3):  [e.g. salesy, jokey, corporate]

WE SAY:        [phrases, terms, product names, spelling]
WE NEVER SAY:  [banned words, competitor names, claims]

FORMATTING:
- Emoji: [none / sparing / frequent]
- Hashtags: [none / 1-3 / platform-specific]
- Sentence length: [short / mixed]
- CTA style: [soft / direct]

CHECK BEFORE SUBMITTING:
- [Any regulated claims, pricing, named customers]

BEST EXAMPLES: [links to 3 approved posts]

Day 1: Context, not writing

The aim of day one is understanding, not output. Resist the urge to hand over drafts immediately.

Morning

1. Walk through how the agency works: calendar, drafting, review, client approval, scheduling. Thirty minutes is enough.
2. Set up tool access and check every login works.
3. Explain the review loop they will be part of all week (described below).

Afternoon

1. The writer reads the handover pack for their first client brand only.
2. They read the ten approved posts and three rejected drafts, and write a short note: "What I think this client's voice is, in five bullets."
3. End-of-day 15-minute check with their reviewer to compare the note against the voice brief.

That note tells you very quickly whether the writer is reading the brand correctly. Correct misreadings now, before they turn into drafts.

Day 2: Shadow drafting

Shadow drafting means the writer drafts posts that a senior is also drafting (or has already drafted), then compares the two. Nothing the writer writes on day two goes to a client.

1. Pick five posts from the upcoming calendar for client one.
2. The writer drafts all five, timeboxed to about 20 minutes each.
3. The senior shares their own version of each, or the version that was actually approved.
4. They compare side by side for 30 minutes. The senior explains every difference that matters: word choice, structure, hook, CTA, what was left out.
5. The writer revises their five drafts based on the comparison.

In the afternoon, repeat the process for client two with the handover pack.

Shadow drafting is the fastest way to transfer the judgement that voice briefs cannot fully capture. It also gives the senior a quick read on where the writer is strong and where they need help.

Day 3: Real drafts, heavy review

From day three, the writer's drafts go into the real calendar, but every one is reviewed by a senior before it reaches the client.

1. The writer drafts the week's posts for client one, at a realistic volume (for example, five to eight posts).
2. The senior reviews using the review checklist below and leaves written comments, not silent edits.
3. The writer makes the changes themselves.
4. The senior does a final pass and sends to the client.

Written comments matter. If the senior silently rewrites the draft, the writer never learns why. A comment such as "this client never opens with a question; lead with the result instead" teaches a rule the writer will apply to the next fifty posts.

The review checklist

Use the same checklist for every draft in the first month:

• Matches the voice brief (tone, words, formatting)
• Correct facts, names, prices, dates and links
• No claims the client has not approved
• Fits the platform (length, format, hashtags)
• Clear point and one clear CTA
• Would the client approve this without edits?

Score each draft with a simple label: ready, minor edits, or rewrite. Keep a tally per writer per client. You will use it on day five.

Day 4: Second brand and first client feedback

1. The writer drafts the week's posts for client two, following the same heavy-review loop as day three.
2. If client feedback on any of the writer's day-three drafts has arrived, go through it together. Client feedback lands harder than internal feedback, so explain the context and turn each comment into a note in the voice brief.
3. Update the voice brief with anything new the writer or senior learned this week. A good voice brief keeps getting better each time someone new uses it.

If your agency uses an AI drafting tool, day four is a good time to introduce it, not earlier. A writer who already understands the brand can judge whether an AI draft is on-voice; one who does not will accept whatever the tool produces. Tools that store each client's brand context, Impret being one example, reduce the re-briefing step, but the review checklist still applies to every draft.

Day 5: Calibration and sign-off criteria

Day five sets the rules for week two onwards.

Morning: calibration session (45 minutes)

1. Look at the week's tally of ready / minor edits / rewrite per client.
2. Pick the three drafts with the most edits and talk through the pattern behind them.
3. Agree two or three specific things the writer will focus on next week.

Afternoon: set sign-off levels

Sign-off levels define how much review each writer-client pair needs. Move the writer up a level per client, not across all clients at once.

Level	What it means	Criteria to reach it
1. Full review	Senior reviews and comments on every draft	Starting point for every new writer and brand
2. Spot check	Senior reviews flagged posts plus a sample of the rest	Most drafts rated "ready" or "minor edits" across two consecutive weeks
3. Independent	Writer sends to client directly; senior reviews high-risk posts only	Client approves the writer's drafts without changes for a sustained period; no factual errors

Write down the actual thresholds you will use, such as "eight of ten drafts rated ready for two weeks running", and share them with the writer. Clear criteria remove the guesswork about when they are trusted, and stop the senior from staying at full review out of habit.

High-risk content (offers, pricing, claims, anything legal or regulated) should always get a second pair of eyes, regardless of level.

What the senior's week looks like

Onboarding is not free. Plan for the senior reviewer's time explicitly:

Day	Senior time (rough)
Before day 1	2-3 hours preparing handover packs
Day 1	1-1.5 hours
Day 2	2 hours (shadow comparison for two clients)
Day 3	1.5-2 hours of review
Day 4	1.5-2 hours of review and feedback
Day 5	1.5 hours calibration and sign-off setup

Block this time in the senior's calendar before the writer starts. If it is squeezed between client deadlines, it is the first thing to get dropped, and the writer ends up learning by guesswork.

Common onboarding mistakes

• Starting with all clients at once. Two or three brands in week one, the rest added one per week.
• Silent rewrites. The senior fixes drafts without explaining, and the writer repeats the same mistakes.
• No rejected examples. The writer only sees approved posts and has no sense of the boundaries.
• Introducing AI drafting on day one. The writer cannot yet tell good output from plausible-sounding output.
• No exit criteria. Full review drags on for months because nobody defined what "ready" looks like.

Next step

Before your new writer's first day, browse the free Impret guides for agencies and add any that fit your process to the handover pack.