The Employment Rights Act 2025 is the most significant overhaul of UK employment law in a generation.
Most commentary has focused on zero-hours contracts, trade union access, and day-one leave entitlements.
Useful context.
But the change with the most immediate financial consequence for energy employers has received far less attention:
The unfair dismissal qualifying period reset.
From 1 January 2027, the qualifying period for unfair dismissal protection drops from two years to six months.
On the same date, the statutory compensation cap, currently set at the lower of 52 weeks’ gross pay or £123,543, is abolished entirely.
Both changes land simultaneously. For hiring managers across nuclear, power generation, and renewables, that combination creates a legal and financial exposure that most organisations have not yet factored into their recruitment process.
The reason this is an issue now, not in six months, is straightforward.
Any candidate hired on or before 1 July 2026 will reach six months of continuous service on 1 January 2027, the day the new rules come into force.
Candidates being interviewed and offered roles this week are already inside that window.
What the Employment Rights Act 2025 Changes for UK Employers
The Employment Rights Act 2025 introduces reforms across several areas of employment law, with implementation running in phases through 2026 and 2027.
The provisions most relevant to hiring managers in the energy sector include:
- Day-one unfair dismissal rights (effective January 2027, subject to a statutory probationary framework)
- Guaranteed hours for zero-hours and low-hours workers after a 12-week reference period (effective October 2026)
- Compensation requirements for short-notice shift cancellations
- Strengthened trade union recognition rights
- Enhanced family leave and flexible working entitlements from the first day of employment
Each of these has practical implications for energy employers. The unfair dismissal reset is the one with the shortest fuse.
The Unfair Dismissal Qualifying Period: What Is Changing
Under current rules, an employee needs two years of continuous service before they can bring an unfair dismissal claim.
That threshold has been in place since 2012, when it was doubled from one year. It gives employers meaningful time to assess a new hire and act on performance or conduct concerns before full tribunal rights attach.
From 1 January 2027, that period becomes six months.
The change arrives alongside the abolition of the statutory compensation cap.
Currently, unfair dismissal awards are capped at the lower of 52 weeks’ gross pay or £123,543.
From January 2027, both thresholds are abolished, and tribunals will assess compensation based solely on actual financial loss with no ceiling.
The practical consequence: a senior technical specialist dismissed after six months, without a robust and documented fair process, could pursue a tribunal claim with no statutory limit on the award.
That claim can include lost earnings to the point of finding equivalent work, lost bonuses, pension contribution losses, and in some cases career-loss claims reflecting the specialist nature of the role and the time required to find comparable employment.
For energy sector roles carrying salaries between £70,000 and £130,000, this is not marginal exposure.
Some employment lawyers have already flagged concern that uncapped awards will open the door to high-value, complex litigation from senior employees, particularly in sectors where compensation packages are substantial.
Why Energy Employers Face a Heightened Risk
The UK energy sector is under genuine hiring pressure.
The January 2026 Contract for Difference auction awarded approximately 8.44 GW of new offshore wind capacity, representing around £22 billion in committed investment, with a further 6.23 GW of onshore wind, solar, and tidal capacity awarded in the same round.
Projects targeting delivery between 2028 and 2030 need people now.
The talent supply is not keeping pace.
91% of engineering construction employers in the nuclear sector report difficulty hiring workers, according to the ECITB Workforce Census 2024.
The Nuclear Skills Strategy Group projects the UK will need 120,000 nuclear workers by 2030, a figure that requires sustained recruitment over many years to reach.
Across the broader technical and engineering market, 70% of employers report that sourcing people with the right technical skills remains their biggest barrier to hiring.
That pressure drives speed.
And speed is where risk enters the picture.
In a market where in-demand candidates receive multiple offers within days, the instinct to move fast is understandable.
But fast decisions made without sufficient due diligence, and without a structured onboarding and performance management framework, are the ones most likely to produce a poor hire — at exactly the moment when a poor hire carries the highest legal and financial exposure it has ever carried in UK employment law.
The Five-Month, Three-Week Window Explained
The arithmetic is worth working through carefully, because it is where most employers are currently underestimating the risk.
From January 2027, an employee gains unfair dismissal rights at six months of continuous service.
Under the government’s commencement approach, employees who start work on or before 1 July 2026 will gain protection on 1 January 2027, the day the rules change.
Someone hired in April 2026, for example, will already have nine months of service when the new rules take effect.
To dismiss an employee fairly, an employer must follow a fair procedure: investigation, formal meetings, right of appeal.
Done properly, this takes several weeks at minimum.
The statutory minimum notice period after one month of service is one week, though most senior energy roles carry contractual notice periods of one to three months.
Taking only the statutory minimum, an employer who identifies a problem at month five has a functional window of five months and three weeks from the hire date in which to act before the employee gains uncapped dismissal rights.
For candidates currently being interviewed and placed, that window opens on their first day.
As one legal firm has noted, there is no transition period for these reforms.
All employees recruited before July 2026 will gain unfair dismissal protection on 1 January 2027, regardless of when their employer last reviewed its probationary policy.
The Fair Work Agency: A New Enforcement Mechanism
The Fair Work Agency, launched on 7 April 2026, is a new state enforcement body created by the Employment Rights Act 2025.
It consolidates HMRC’s National Minimum Wage enforcement team, the Employment Agency Standards Inspectorate, and the Gangmasters and Labour Abuse Authority into a single body with broader powers than any of its predecessors.
The Agency can audit payroll records and employment contracts, inspect premises, and initiate tribunal claims on behalf of workers directly, without requiring the individual employee to bring a claim first.
For energy employers, this matters for two reasons.
First, it increases the likelihood that a procedurally flawed dismissal, or a breach of the new guaranteed-hours provisions, will be pursued even if the employee does not take action independently.
Second, it signals where enforcement is heading. The legal environment for employers is tightening and becoming more proactive. Relying on claims not being brought is no longer a safe assumption.
What the Zero-Hours Changes Mean for Energy Project Labour
The unfair dismissal reset is the most pressing issue for permanent hires, but October 2026 brings parallel changes affecting the flexible and contract labour arrangements that many energy projects depend on.
From October 2026, workers on zero-hours or variable-hours contracts gain the right to request guaranteed hours after completing a 12-week reference period.
Employers will be required to offer contracts reflecting average hours worked, or demonstrate a legitimate business reason for maintaining variable arrangements.
Compensation for short-notice shift cancellations also becomes mandatory, and workers must receive reasonable advance notice of shifts.
For major project contractors managing large site workforces, this changes the cost model for flexible labour in a material way.
The cost differential between permanent and variable-hours arrangements is narrowing, and project workforce budgets built on previous assumptions may need revisiting before October.
Further reading on workforce planning in the energy sector.
What Energy Employers Should Do Before the End of 2026
The reforms described here are not proposals.
The Employment Rights Act 2025 has received Royal Assent. Implementation dates are fixed. The steps needed are practical and finite.
Shorten and strengthen your probationary framework. A six-month probation that ends on the day unfair dismissal rights attach offers no buffer. Three to four months, with documented reviews beginning in week one, is the appropriate response. Informal check-ins at month five are not sufficient evidence of a fair process if a claim follows.
Audit your current recruitment pipeline. Any candidate being assessed or offered a role now will be covered by the new rules within six months of starting. That reality should inform how you assess candidate fit and how you manage probationary performance.
Review your variable and zero-hours arrangements. Workers who reach 12 weeks of variable-hours service before October 2026 will have the right to request guaranteed hours. Identify those individuals now.
Brief your line managers. The most common source of unfair dismissal liability is not bad intent. It is an informal process: a conversation that was not documented, a meeting not recorded, a decision made without the right procedure. Line managers running performance and probationary reviews need to understand what a defensible process looks like under the new rules.
Take legal advice specific to your organisation. This article is commentary, not legal advice. If you have not already had a specific briefing on how these changes apply to your workforce, arrange one before the summer.
Getting the Hire Right First Time
The best mitigation against unfair dismissal exposure is not a revised probation policy. It is a better hire to begin with.
In this market, that requires more than posting a vacancy.
It requires a clear brief, a realistic candidate profile, access to people who are not actively applying through job boards, and the ability to assess technical competence alongside fit for a specific team, project, and working environment.
Specialist recruitment reduces the probability of a poor hire at exactly the moment when a poor hire carries its highest ever legal and financial exposure. At Astute, we work exclusively within nuclear, power generation, and renewables.
We place permanent technical specialists and support contract and project resourcing for some of the UK’s largest energy programmes. We understand what a strong shortlist looks like in this sector because we operate within it every day.
If you have open technical roles and want confidence in the hiring decisions you are making this summer, get in touch.
Frequently Asked Questions
When does the unfair dismissal qualifying period change? The qualifying period for unfair dismissal protection reduces from two years to six months on 1 January 2027, under the Employment Rights Act 2025.
Is the statutory compensation cap for unfair dismissal being removed? Yes. The cap, currently set at the lower of 52 weeks’ gross pay or £123,543, is abolished from 1 January 2027. Tribunal awards will be based on actual financial loss with no ceiling.
Does this affect only new hires or existing employees too? Both. The change applies to any employee who has at least six months of continuous service by 1 January 2027. This includes current employees approaching that threshold, as well as new hires made in mid-2026.
What is the Fair Work Agency? The Fair Work Agency is a new state enforcement body launched April 2026. It can audit employers, inspect premises, and initiate tribunal claims on behalf of workers directly.
How should energy employers change their probationary policies? Shorten probationary periods to three or four months and introduce structured, documented reviews from month one. Seek independent legal advice before making changes specific to your organisation.
Where can I find out more about technical recruitment in the UK energy sector? Astute works with hiring managers across nuclear, power generation, and renewables. Get in touch to discuss your current pipeline.
This article is intended as general commentary and does not constitute legal advice. Employers should seek independent legal counsel regarding their specific obligations under the Employment Rights Act 2025.
