# Onboarding new starters: the first 90 days Source: https://sarang.pro/onboarding-new-starters-first-90-days/ Author: Sarang | Published: 25 October 2026 A new starter decides a lot in their first few weeks: whether they made the right choice, whether their manager has time for them, and whether they can do the job. Onboarding is how you shape those answers. Done well, it gets people working with confidence sooner. Done badly, it leaves them with a laptop, a login and a vague sense of being in the way. This guide walks through the first 90 days in stages: before day one, the first day, a 30-60-90 plan, a buddy, and the review that closes the period. It uses UK guidance from Acas and the CIPD. ## Why onboarding is worth planning The [CIPD's induction factsheet](https://www.cipd.org/uk/knowledge/factsheets/induction-factsheet/) says first impressions shape how well a new recruit integrates with the team and how satisfied they are in the job, and that effective induction may reduce staff turnover and absence. [Acas](https://www.acas.org.uk/inductions) is clear that there is no legal requirement to run an induction, and no set length for one. The right length depends on the role and the organisation. Two legal points still apply. Workers must be paid for hours worked from their first day, including time spent on induction. And induction is separate from probation: if a probation period applies, it must be stated in the worker's written statement of employment particulars. The terms overlap in practice. "Induction" often means the formal first days or weeks. "Onboarding" usually means the longer process of becoming a full member of the team. This guide treats the first 90 days as one plan. ## Before day one Acas's [guidance on planning an induction](https://www.acas.org.uk/inductions/planning-an-induction-programme) says employers should plan a worker's induction before they start. It suggests sending an information pack in advance covering what to expect on day one, practical details such as parking and dress code, how to collect equipment, and any staff handbook. If the written statement of employment particulars was not sent with the job offer, include it. A short preboarding checklist: - Equipment ordered, set up and tested. - Accounts created for email, chat and the core tools for the role. - First-week calendar drafted, with meetings already booked. - Buddy chosen and told. - A welcome message from the manager a few days before the start date. - Any reasonable adjustments agreed and in place. ## Day one Acas advises focusing on making the person feel welcome and completing essential tasks: bank details, National Insurance number, P45, and access to tools and equipment. It warns against giving too much information on the first day. Ideally the new starter meets their manager and any buddy on day one, and the wider team within the first few days or weeks. Health and safety belongs on day one too. Acas lists the organisation's policy, required training, how to report hazards, accident and emergency procedures and fire evacuation, and for home workers, whether they have a safe place to work. It notes that all employers have a legal responsibility for the health and safety of workers. A good first day ends with the person knowing three things: who to ask for help, what they will do this week, and what good looks like at the end of the first month. ## A 30-60-90 day plan A 30-60-90 plan breaks the first three months into stages, each with a focus and a few concrete goals. It is a common practice, not a formal standard, so adapt it to the role. A University of Delaware [onboarding guide](https://www.udel.edu/content/dam/udelImages/human-resources/Photos/documents/first_30_days.pdf) uses a similar rhythm, with check-ins scheduled at 30, 60, 90 and 180 days. StageFocusTypical goals Days 1 to 30LearnMeet key colleagues and stakeholders, learn the tools and processes, complete required training, deliver one small piece of real work. Days 31 to 60ContributeTake ownership of regular tasks, start a defined project, give the manager feedback on the onboarding so far. Days 61 to 90OwnWork with less supervision, deliver the first project, agree objectives for the next six months. Write the plan with the new starter in their first week, not for them. Their questions will show you what they already know and where the gaps are. ## Give every new starter a buddy A buddy is a peer, not the manager, who helps the new starter settle in and answers the questions they might not want to ask their boss. Acas treats a buddy or mentor as optional. The evidence suggests it is worth doing. Microsoft ran a [pilot with 600 employees](https://workplaceinsights.microsoft.com/?p=853) on onboarding buddies. It reports that buddies helped new hires understand unwritten norms and find the right people. The more often new hires met their buddy in the first 90 days, the more likely they were to say they had become productive quickly: 56% of those who met their buddy at least once, rising to 97% of those who met more than eight times. After the first week, new hires with a buddy were 23% more satisfied with their onboarding than those without, and at 90 days the gap was 36%. To make a buddy system work: - choose someone with time, patience and a good knowledge of how things get done - avoid making it the new starter's line manager - suggest a weekly 30-minute catch-up for the first two months - recognise the buddy's time in their own objectives ## Check-ins, probation and the 90-day review Acas advises talking with the new starter regularly: ask how they are doing, listen, answer questions and give ongoing feedback. Once they have some experience in the role, hold a more formal review covering how they are finding the job, their strengths, further training needs and any concerns. If performance is falling short, use that conversation to review the induction and add training or support before reaching for performance management. If you use a probation period, line up its review with the end of the 90-day plan so the two conversations do not compete. In Great Britain, check your probation lengths against current law: the CIPD's factsheet notes that under the Employment Rights Act 2025, the qualifying period for unfair dismissal protection becomes six months, instead of two years, from 1 January 2027, and suggests HR teams review induction, onboarding and probation periods now. ## A worked example An example (illustration only). A 12-person jewellery brand hires a remote marketing executive. Before day one, the founder sends a welcome note, the laptop arrives with accounts set up, and a designer on the team agrees to act as buddy. Day one is mostly video calls: 30 minutes with the founder, payroll forms, the brand guidelines and a short call with the buddy. The first-month goal is specific: draft the next two weekly emails with the buddy's help and learn the email platform. By day 60 the executive owns the weekly email. By day 90 they have run one product launch campaign and agreed six-month objectives. At the 90-day review they say the most useful thing was the buddy explaining which decisions the founder wants to see first. ## Common mistakes - Equipment and access not ready on day one. - A first week of reading documents with no real work. - Too much information on day one, as Acas warns. - No named buddy, so questions go unasked. - Onboarding that stops after week one. - No 90-day review, so problems surface at the end of probation instead of the middle. Scale the plan to the role. A short-term contractor needs access, a contact and a clear brief. A first-time employee needs more detail than an experienced hire, as Acas notes. Experienced hires still need the unwritten rules explained, because those are what no job description covers.