The Employment Rights Act Puts Line Managers on the Front Line: What People Leaders Should Prepare Now

Ask most People teams how they are preparing for the Employment Rights Act and you will hear a familiar list: update the handbook, review contracts and probation clauses, brief managers on the new rules, tighten the paperwork. It is a sensible list. It is also built around the moment something becomes formal.

That is not where most of the risk will build. The Act does not give line managers new conversations to have. It raises the stakes on the ones they already have, or avoid, every week. A People leader who prepares only the formal layer is preparing for the small share of cases that reach it.

This article is about manager capability, not legal advice. Dates are taken from the government's timeline as updated on 22 October 2026 and may change; check the current position and take advice on individual cases.

What actually changes, and when?

The government's implementation timeline, last updated on 22 October 2026, sets out the changes most relevant to line managers:

• 1 October 2026: the time limit for bringing most employment tribunal claims doubled from three months to six.
• 30 October 2026: employers must take "all reasonable steps" to prevent sexual harassment of their employees, and must not permit harassment by third parties such as customers or clients.
• 1 January 2027: the qualifying period for unfair dismissal falls from two years to six months, for dismissals from that date, and the cap on the compensatory award is removed.
• October 2027: changes to flexible working requests are listed for this date.

One detail is easy to miss. Because the test is six months' service, the protection on 1 January covers anyone who joined before early July 2026. As Julie Jones of WorkNest put it in theHRDIRECTOR in May, "In reality, the risk starts building from Summer 2026." For many of your recent hires, the conversations that will matter are happening now.

Why is this a line-manager problem rather than an HR problem?

Because that is where workplace concerns actually get handled. In Acas's survey of 4,558 working people in Great Britain, run by NatCen in August and September 2025, 44% had experienced conflict at work in the previous 12 months, which Acas describes as the highest level ever reported in a survey of British workers. Among those who had, the most common topic was capability and performance (38%).

Then look at how people tried to resolve it. The most common route was a discussion with their own line manager (45%), followed by an informal discussion with the other person (30%). Only 9% used a formal grievance or complaint, and fewer than 0.5% made a tribunal claim. Nearly a third (31%) said the conflict remained mainly or completely unresolved.

Read those figures together and the shape is clear. The formal system, the part most preparation focuses on, deals with a thin slice of what goes on. The bulk of it is conversations, most of them involving a line manager. The Act makes the consequences of getting the formal slice wrong larger. It does nothing to change where the slice comes from.

What does most preparation miss?

It teaches managers the rules, not the conversation. At the CIPD's 2025 annual conference roundtables, attendees strongly supported training line managers on performance management and employment law, and the CIPD's advice to employers was to make sure managers actively manage new starters' performance during probation and record concerns consistently from day one.

That advice is right. But notice what it assumes: that the manager is willing and able to raise the concern in the first place. A record of a concern is only as good as the conversation behind it. If the manager never said it plainly, the note on file describes a conversation the employee does not recognise. That is a weaker position than having no note at all, and it is unfair to the employee, who was never given a real chance to improve.

Confidence is not where it needs to be. In a WorkNest survey of more than 1,000 employers, only 19% said they were very confident about dismissing an employee at the end of a six-month probation; 11% lacked confidence and 13% would need HR advice. That question is about the end point. The harder part for most managers is the start: the first clear, specific conversation that tells someone their work is not yet where it needs to be.

Which conversations carry the most risk now?

The early word in probation. With six months rather than two years, the window for an honest, supported conversation about fit and performance is much shorter. Managers who wait for the formal review, or who soften the message so much that it is not heard, will reach month five with a problem and no history of having raised it. The fix is a habit of small, specific conversations about the work from the first weeks, so nothing in the final review comes as a surprise.

The informal concern. Acas has consulted on an updated Code of Practice on disciplinary and grievance procedures. The draft adds guidance on resolving concerns informally, says an informal approach should never by itself result in formal disciplinary action, and encourages employers to train and support managers to resolve concerns early. The consultation closed on 23 September 2026 and has no confirmed start date. The direction is clear all the same. Acas puts the cost of formal disciplinary and grievance procedures to UK employers at about £2.36 billion a year, against about £250 million for informal resolution. And under the current Code, tribunals can already adjust awards by up to 25% for unreasonable failure to follow it. With the compensation cap removed, the cost of a badly handled process rises with it.

The first response to a complaint. The strengthened harassment duty asks employers to take all reasonable steps to prevent it. The Equality and Human Rights Commission's technical guidance, written for the existing preventative duty, gives examples that include specific training for managers to support them in dealing with complaints, and it treats training that was "very brief and took place two years ago" as unlikely to be enough. When someone tells their manager something difficult, the manager's first few sentences shape whether that person feels safe to say more. That is not a moment you can script on the day.

Why is a policy refresher not enough?

Because knowing the right thing and saying it under pressure are different skills. A manager can pass a quiz on probation process and still freeze when a likeable new hire says "nobody told me that was the standard", or still rush to reassure when someone describes a client's behaviour that made them uncomfortable. We have written before about why frameworks fail without practice: a model is something you recall when you are calm, and a hard conversation is something you have to do while the other person reacts.

This is also about psychological safety, not only legal risk. A team that sees concerns raised early, specifically and fairly learns that it is safe to talk about problems. A team that sees silence followed by a sudden formal process learns the opposite. The same manager behaviour that protects the organisation under the new rules is the behaviour that makes people more willing to speak up.

What should People and L&D leaders prepare now?

• Map the conversations, not just the policies. For each change, name the conversation a line manager will actually have: the week-four check-in with a new starter, the first "this isn't working yet", the response to a complaint, the reply to a flexible working request. Build preparation around those moments.
• Start with everyone hired since the summer. Ask managers of recent joiners whether each person knows clearly how they are doing. Where the honest answer is no, that conversation should happen this month, not in month five.
• Make "raised early, in person" the standard, and the note second. Keep the record-keeping the CIPD recommends, but make it record a conversation that took place, with the specifics and the support agreed.
• Give managers repetitions, not just information. Pair the legal briefing with realistic practice of the two or three conversations that carry the most risk, including the part where the other person pushes back, goes quiet or gets upset.
• Check whether it is working. Add a simple pulse question for new starters, such as "I know how I am doing against what is expected of me", and look at it by team before probation reviews, not after.

Where does practice fit in?

This is the gap HumanVantage was built for. Managers rehearse the conversations they tend to put off, such as the first honest probation conversation or the response to a difficult disclosure, in a private video role-play with an AI colleague who reacts like a real person would. They get private feedback, try again, and go into the real conversation having already been through the hard minute once. Nobody is watching, nothing is scored for anyone else, and nothing is reported upwards: the aim is the manager's confidence and a team that feels safe to raise things early. In our pilots of over 100 managers across several organisations, 82% said they would use it before a real one-to-one.

The Employment Rights Act will be judged in tribunals, but it will be won or lost in ordinary conversations months earlier. The organisations best placed for 2027 will not be the ones with the thickest policy pack. They will be the ones whose managers can say the difficult thing early, clearly and kindly, because they have practised it.