Skip to main content
Slaughter & May logo
  • People
  • Services
  • Insights
  • Careers
  • Horizon Scanning
  • More...
  • Our Firm Our Firm
    Our Firm Go to Our Firm
    Culture and Values Culture and Values
    Culture and Values Go to Culture and Values
    • Diversity and inclusion
    • Recognition and partnerships
    • Employee networks
    History History
    History Go to History
    Innovation Innovation
    Innovation Go to Innovation
    • Client Innovation Network
    • Fast Forward
    Reputation for Excellence Reputation for Excellence
    Reputation for Excellence Go to Reputation for Excellence
    Responsible Business Responsible Business
    Responsible Business Go to Responsible Business
    • Social mobility
    • Climate action
    • Pro bono
    • Community
  • Services Services
    Services Go to Services
    Practices Practices
    Practices Go to Practices
    • Capital Markets
    • Competition
    • Commercial Contracts
    • Construction and Projects
    • Corporate and M&A
    • Cyber
    • Data Privacy
    • Disputes
    • Employment
    • Environmental, Social and Governance
    • Financial Institutions Group
    • Financial Regulation
    • Financing
    • Global Investigations
    • Incentives
    • Infrastructure and Energy
    • Insurance
    • Intellectual Property
    • Pensions
    • Private Equity
    • Real Estate
    • Restructuring and Insolvency
    • Risk
    • Sport
    • Tech and Digital
    • Tax
    Sectors Sectors
    Sectors Go to Sectors
    • Asset Management
    • Banking and Finance
    • Consumer and Retail
    • Government
    • Fintech
    • Healthcare, Pharma and Life Sciences
    • Industrial Products and Services
    • Infrastructure and Energy
    • Insurance
    • Media & Telecoms
    • Private Equity
    • Real Estate and Construction
    Case Studies Case Studies
    Case Studies Go to Case Studies
  • People People
    People Go to People
  • Insights Insights
    Insights Go to Insights
    All Insights All Insights
    All Insights Go to All Insights
    • Horizon Scanning
    • Strategic M&A Series
    • Sustainability Hub
    • Financial Regulation Bulletin
    • The Law Reviews
    Blogs Blogs
    Blogs Go to Blogs
    • The Lens - Technology Insights
    • Sustainable Matters
    • Pensions Pointers
    • European Tax
    Podcasts Podcasts
    Podcasts Go to Podcasts
  • Global Working Global Working
    Global Working Go to Global Working
    Africa Africa
    Africa Go to Africa
    Americas Americas
    Americas Go to Americas
    Asia Pacific Asia Pacific
    Asia Pacific Go to Asia Pacific
    Europe Europe
    Europe Go to Europe
    Middle East and North Africa Middle East and North Africa
    Middle East and North Africa Go to Middle East and North Africa
  • Careers Careers
    Careers Go to Careers
    Early Careers Early Careers
    Early Careers Go to Early Careers
    • Great minds think differently
    • The training contract
    • Work experience opportunities
    • Solicitor Apprenticeship Programme
    • Meet Us
    • Apply
    • Profiles
    Qualified lawyers Qualified lawyers
    Qualified lawyers Go to Qualified lawyers
    • Who to contact
    • Apply
    Business Services Business Services
    Business Services Go to Business Services
    • Contact us
    • Apply
    Hong Kong Careers Hong Kong Careers
    Hong Kong Careers Go to Hong Kong Careers
    Work experience for schools Work experience for schools
    Work experience for schools Go to Work experience for schools
    Alumni Alumni
    Alumni Go to Alumni
  • News News
    News Go to News
    Firm News Firm News
    Firm News Go to Firm News
    Recent Work Recent Work
    Recent Work Go to Recent Work
  • Contact us Contact us
    Contact us Go to Contact us
    London Office London Office
    London Office Go to London Office
    Brussels Office Brussels Office
    Brussels Office Go to Brussels Office
    Hong Kong Office Hong Kong Office
    Hong Kong Office Go to Hong Kong Office
    Beijing Office Beijing Office
    Beijing Office Go to Beijing Office
    Website Support Website Support
    Website Support Go to Website Support
    Press and Media Queries Press and Media Queries
    Press and Media Queries Go to Press and Media Queries
  • Insights
  • Employment Rights Act

Employment Rights Act

Updates & Insights on the Employment Rights Act 2025

The Employment Rights Act 2025 received Royal Assent on 18 December 2025, marking a pivotal moment in UK employment legislation. Widely regarded as the most significant upgrade to workers’ rights in a generation, the Act introduces 28 wide ranging reforms that will reshape the employment landscape for years to come. From a new unfair dismissal regime and guaranteed hours for casual workers, to enhanced trade union access and new liabilities for workplace harassment, the Employment Rights Act signals a decisive shift in how employers engage with their workforce.

While implementation will be phased, the first wave of changes in February 2026 is particularly relevant for unionised businesses. These include streamlined procedures for calling industrial action, and greater protections for employees taking part in such action. Further waves of changes will follow in April and October, as well as a myriad of consultations on proposals which may stretch into 2027.

This hub is designed to help you stay ahead. Here you will find expert insights, practical guidance, and answers to key questions raised by the Act, serving as a central resource for navigating the Employment Rights Act. 

In this hub you will find:




What is changing?

Key dates
The implementation roadmap
What can we do to help
Podcast insights
Other related insights

 

What is CHANGING?

Future planning demands a clear understanding of the changes introduced by the Act. We have distilled there are seven key questions for employers:

The qualifying period for unfair dismissal protection will be reduced by the ERA, from two years to six months, with effect from 1 January 2027. The Bill’s original proposal for day one protection was dropped just before Royal Assent, as were the provisions setting out a statutory probation period.  Employers will need to review their recruitment procedures, to give themselves the best chance of recruiting the right candidates from the outset. Employment contracts for new joiners may need amending for new probation periods, during which new recruits should be carefully monitored and managed.

The ERA also abolishes the cap on unfair dismissal compensation, which was set at the lower of 52 weeks’ pay or a statutory amount (£118,223 from April 2025). This will make unfair dismissal claims much more attractive to high earners. Employers need to be prepared not just for more unfair dismissal claims, but for greater financial exposure when those claims succeed.

Employers who are not yet unionised should anticipate a trade union approach, under new powers of access for unions contained in the ERA. The union recognition procedure is also being streamlined and simplified, as is the ability for unions to call strike action. These changes are being phased in throughout 2026. Existing employee engagement mechanisms should be reviewed, as their robustness may determine whether any union 
approach is successful or not.

All employers should also prepare for changes to collective redundancy consultation. Alongside the existing trigger of 20 or more proposed redundancies at one establishment within 90 days, the ERA allows for a new alternative threshold to be introduced in 2027, with details of how this will work in practice to be prescribed in regulations. The maximum protective award is also set to increase in April 2026, from 90 to 180 days’ pay per 
affected employee.

Employers may need to make changes to contractual terms for a variety of reasons; financial, legal, regulatory or operational. Securing employee consent to these changes, at an individual and/or collective level, is not always straightforward. Whilst “fire and rehire” is seen as a last resort for most employers, by October 2026 the ERA is set to make dismissals to implement certain “restricted variations” automatically unfair, unless the employer can satisfy a very narrowly drawn financial distress exception. Employers therefore need to consider how they would avoid a situation where contractual changes are needed but cannot be agreed with employees.

Many businesses value the flexibility that zero-hours or low hours contracts provide. Work can be offered when it is available, without the employer being tied to a regular hours commitment which it may not be able to sustain. The ERA however erodes this flexibility, with the aim of providing greater stability for workers on these contracts. With effect from 2027, it will require employers to make a “guaranteed hours offer” to certain qualifying workers, based on the average hours worked over a reference period. Agency workers will also be included within these reforms. There will, however, be scope for employers to contract out of these measures using a collective agreement. The provisions are very complex and much of the detail is yet to be prescribed, but businesses who use these contracts need to be prepared to make some significant changes.

Employers, in October 2024, came under a new duty to take reasonable steps to prevent sexual harassment of their employees. Risk assessments are an essential method for identifying scenarios where employees may be at risk of workplace harassment, and identifying steps which could reasonably be taken to prevent it. However, by October 2026 more will be required – the ERA strengthens the new preventative duty by requiring employers to take all reasonable steps to prevent sexual harassment.

In addition, the ERA will reintroduce employer liability for harassment of their staff by third parties – and with a stricter test than previously applied until 2013, since the ERA’s provisions do not require at least two instances of harassment, of which the employer is aware, before it can be liable. Employers will also be prevented from using non-disclosure agreements (NDAs) to prevent workers making allegations of harassment or discrimination.

Labour’s Plan to Make Work Pay committed to “make flexible working the default from day one for all workers, except where it is not reasonably feasible”. In fact, the ERA retains the current model whereby employees have a right to request flexible working from day one, but the employer can refuse if it considers the request reasonably and relies on one of the eight prescribed statutory reasons for refusal. The only change made by the ERA (and only with effect from 2027) is to require the employer to act reasonably in determining its reason for refusal, and to communicate this rationale to the employee. Employers should nonetheless be braced for more flexible working applications, and prepared to demonstrate that their approach to all of them is reasonable.

Large employers (with 250 or more employees) will now be accustomed to collating and reporting gender pay gap information – and many already voluntarily publish equality action plans to tackle their pay gaps. The ERA will however make these action plans mandatory in 2027, and also extend them to measures the employer is taking to supporting employees through the menopause. It will also require employers to publish information about the service providers that they contract with for outsourced services. A separate Bill, the Equality (Race and Disability) Bill is also set to extend pay gap reporting beyond gender, to cover race and disability, and the government is consulting on how this will work in practice. Employers will need to review their diversity data collection procedures in readiness for the new obligations.

Back to top

UNDERSTANDING THE ROAD TO COMPLIANCE

The Employment Rights Act signals a major shift in workplace regulation, requiring organisations to adapt to new standards and timelines.

KEY DATES

   

April 2026

February 2026

  • Industrial action ballots: removal of ballot thresholds and support requirements under Trade Union Act 2016
  • Notice periods for industrial action reduced from 14 to 10 days 
  • Validity of strike ballots extended from six to 12 months
  • Enhanced protections against dismissal for employees taking part in strike action
  • Changes to facility time, union subscriptions and political fund reporting

 

   

April 2026

April 2026

  • Fair Work Agency established 
  • Day-one paternity leave and unpaid parental leave
  • Collective redundancy maximum protective award doubled from 90 to 180 days' pay
  • Sexual harassment whistleblowing protections implemented
  • Statutory Sick Pay - removal of Lower Earnings Limit and waiting period
  • Simplification of trade union recognition process; electronic and workplace balloting 
  • Gender pay gap and menopause action plans (voluntary only until 2027)

April 2026

October 2026

 

  • Fire and rehire changes (dismissal for failure to agree contractual variation)
  • Requiring employers to take "all reasonable steps" to prevent sexual harassment of employees 
  • Introducing employer liability for third party harassment
  • Strengthening trade unions' right of access in the workplace 
  • Enhanced protections for trade union representatives
  • Enhanced protections for workers against detriments for taking industrial action 
  • Duty to inform workers of their right to join a trade union; strengthening of trade unions' right of access 
  • Employment tribunal time limits increase from three to six months 
  • Measures to ensure the fairer allocation of tips 

 

April 2026

2027

  • Unfair dismissal qualifying period reduced to six months, and compensation cap removed 
  • Zero hours contracts - Guaranteed Hours Offers
  • Collective redundancy - new collective consultation threshold
  • Power to enable regulations to specify steps that are to be regarded as "reasonable", to determine whether an employer has taken all reasonable steps to prevent sexual harassment 
  • Enhanced protections from dismissal for pregnant women and new mothers returning from maternity leave
  • Gender pay gap and menopause action plans become mandatory (*Note: implementation of the gender pay gap outsourcing measure will depend on related measures in the draft Equality (Race and Disability) Bill)
  • A statutory right to bereavement leave, including for those who suffer pregnancy loss before 24 weeks
  • Flexible working changes 
  • Blacklisting 
  • Regulation of umbrella companies 

Back to top

THE implementation roadmap  

Click here to take a closer look at the ERA implementation roadmap 

 

ERA Timeline

WHAT CAN WE DO TO HELP

The Slaughter and May Employment team is analysing the ERA’s provisions in depth, and closely monitoring its passage through Parliament. We are also engaging with the government through the Employment Lawyers Association and other trade bodies on how the Act will operate in practice, and the challenges it presents for both employers and employees. We are ideally placed to assist your business in preparing for the ERA’s implementation, whether through training, strategic insights, reviewing contracts, policies and procedures, and creating new ERA action plans.

phil-linnard14516.jpg
Phil Linnard Partner
phillipa-o'malley_6597.jpg
Philippa O'Malley Partner
charles-cameron_12372.jpg
Charles Cameron Partner
simon-clark_23974.jpg
Simon Clark Senior Counsel
david-rintoul14756.jpg
David Rintoul Senior Counsel
clare-fletcher9350.jpg
Clare Fletcher Knowledge Counsel
Phil Linnard
Philippa O'Malley
Charles Cameron
Simon Clark
David Rintoul
Clare Fletcher

Back to top

PODCAST INSIGHTS

Clare Fletcher and Philippa O'Malley share their thoughts on the implementation timeline for the Act 

Download transcript

The Employment Rights Act presents both challenges and opportunities. With reforms set to reshape the legal landscape, early preparation will be key. We are ready to support you in navigating the changes, whether through strategic planning, policy review or tailored legal advice.

To discuss how the ERA may affect your organisation, please contact your usual Slaughter and May partner or one of the team listed above.

Back to top

OTHER RELATED INSIGHTS

  • First look: The Employment Rights Bill 2024

    November 2024

  • Labour's plans to reshape employment: a new era for the workplace

    January 2025

  • Back to top

    This material is provided for general information only. It does not constitute legal or other professional advice.

    Slaughter & May logo
    London

    One Bunhill Row
    London
    EC1Y 8YY
    United Kingdom

    Brussels

    Square de Meeûs 40
    1000 Brussels
    Belgium

    Beijing

    2906-2909 China World Office 2
    No.1 Jianguomenwai Avenue
    Beijing 100004
    China

    Hong Kong

    47th Floor, Jardine House
    One Connaught Place, Central
    Hong Kong
    China

    • Contact us
    • Privacy notice
    • Accessibility
    • Cookies
    • Legal and regulatory
    • Fraud and scams
    • Modern Slavery
    © Copyright 2025