Most organisations have a whistleblowing policy. Far fewer can demonstrate that their managers have been trained to act on it correctly. That gap carries real legal consequences and risks.
When a protected disclosure is mishandled – through ignorance rather than intent – the employment tribunal does not distinguish between the two. This article sets out the specific legal consequences of failing to train managers on whistleblowing, and what organisations need to do to close the exposure.
Automatic unfair dismissal with no qualifying period
Under the Public Interest Disclosure Act 1998 (PIDA), dismissal of a worker for making a protected disclosure is automatically unfair. There is no qualifying employment period – a worker dismissed on their first day because they blew the whistle can bring a tribunal claim. Compensation is uncapped.
The practical consequence for untrained managers is significant. A manager who dismisses or triggers a dismissal process shortly after receiving a whistleblowing disclosure – without recognising the disclosure as protected – creates the conditions for an automatic unfair dismissal claim. The tribunal will assess the sequence of events, and proximity between a disclosure and adverse action is a powerful indicator. The organisation’s inability to demonstrate that its managers were trained to handle protected disclosures will weaken any defence that the dismissal was unrelated.
Detriment claims and personal manager liability
PIDA prohibits subjecting a whistleblower to any detriment as a result of a protected disclosure. Detriment includes formal disciplinary action, but also informal measures – exclusion from meetings, changes to duties, negative performance assessments, withdrawal of development opportunities, or a pattern of treatment that disadvantages the worker. Detriment does not need to be intentional to be unlawful.
Two features of the detriment framework are particularly relevant to manager training:
Employer vicarious liability
The employer is liable for detriment caused by the acts of its workers – including managers – unless it took all reasonable steps to prevent those acts. An untrained manager who retaliates against a whistleblower, even without understanding that retaliation is unlawful, exposes the organisation to a detriment claim it cannot defend on a reasonable steps basis. Documented, current whistleblowing training for managers is the primary mechanism for establishing that defence.
Personal liability of the individual manager
PIDA enables employment tribunals to join individual managers as respondents to detriment claims and order them to pay compensation personally. This is not a rarely used provision. Where the detriment is clearly attributable to the conduct of a named manager – a disciplinary initiated, a reference withheld, a promotion blocked – the tribunal can apportion liability accordingly. For managers, this makes whistleblowing training a matter of personal legal risk.
The Worker Protection Act 2023: the 25% uplift
The Worker Protection (Amendment of Equality Act 2010) Act 2023, in force since October 2024, introduced a positive duty on employers to take reasonable steps to prevent sexual harassment. Under ERA 2025, sexual harassment is now also a qualifying disclosure category under PIDA, meaning a worker who reports harassment may simultaneously be protected as a whistleblower.
Where a tribunal finds an employer has breached the positive preventative duty, compensation in the underlying harassment claim can be increased by up to 25%. In discrimination cases, where compensation is uncapped, that uplift can represent a very significant sum. Failing to train managers on both the harassment prevention duty and the whistleblowing protections that now attach to harassment disclosures creates compounded legal exposure under two separate statutory frameworks.
ECCTA and failure to prevent fraud
The Economic Crime and Corporate Transparency Act 2023 introduced a failure to prevent fraud offence, which came into force on 1 September 2025. Organisations in scope – broadly, large companies meeting two of three Companies Act size thresholds – commit an offence if an associated person commits fraud for the organisation’s benefit and the organisation did not have adequate fraud prevention procedures in place.
Whistleblowing is a primary fraud detection mechanism. ACFE’s 2024 research found that 43% of frauds are detected by tips – three times any other method – with 52% of those tips coming from employees. Adequate fraud prevention procedures therefore include mechanisms for employees to report concerns and managers trained to receive, escalate and protect those reports. An organisation that cannot demonstrate its managers were equipped to handle fraud-related disclosures faces the argument that its prevention procedures were not adequate – directly relevant to the ECCTA defence.
Regulatory consequences beyond the employment tribunal
Employment tribunal claims are the most visible consequence of whistleblowing mismanagement, but they are not the only one. Several regulatory frameworks impose their own consequences:
Sector regulators
In financial services, the FCA expects regulated firms to have adequate arrangements for employees to raise concerns. The FCA’s non-financial misconduct rules (PS25/23), finalised in December 2025 and in force from 1 September 2026, explicitly include how firms handle internal disclosures as part of their conduct assessment. A firm that cannot demonstrate its managers are trained to handle whistleblowing reports faces conduct risk as well as employment law risk.
The Fair Work Agency
Established under ERA 2025 and launched on 6 April 2026, the Fair Work Agency has proactive enforcement powers across a range of employment law obligations. Organisations in higher-risk sectors should treat the Agency’s existence as an additional reason to ensure manager training is documented and current.
EHRC enforcement
The Equality and Human Rights Commission has enforcement powers under the Worker Protection Act 2023 including the ability to conduct investigations and issue unlawful act notices. An EHRC investigation into an employer’s harassment prevention arrangements will scrutinise the quality and currency of manager training as a primary indicator of compliance.
The evidential burden on employers
In whistleblowing detriment cases, once a worker establishes that they made a protected disclosure and suffered a detriment, the burden shifts to the employer to demonstrate the detriment was not on the grounds of the disclosure. That is a difficult burden to discharge where no training records exist, where training content is outdated, or where managers have received awareness-level training rather than training that equips them to handle disclosure situations correctly.
Organisations that invest in documented, CPD-accredited manager training – and that can produce records of who was trained, on what content and when – are in a materially stronger evidential position. Training records also demonstrate to tribunals and regulators that the organisation takes its obligations seriously, which can influence both liability findings and remedy assessments.
The Safecall Benchmark Report 2024 found that discrimination reports tripled from 3% to 8% of HR cases year-on-year, and bullying increased by 5% to 17% of cases. These categories consistently feature in whistleblowing disclosures. The volume of disclosure activity in the contemporary workplace means that manager training is not a precautionary investment – it is a response to a demonstrable and growing risk.
Related resources
Legal Obligations for Manager Training in the UK (hub): https://www.safecall.co.uk/resource/legal-obligations-for-manager-training-in-the-uk/
Whistleblowing Training for Managers: https://www.safecall.co.uk/service/whistleblowing-training-for-managers-online-and-on-site/
Handling Whistleblowing Disclosures – A Manager Guide: https://www.safecall.co.uk/resource/what-does-the-public-interest-disclosure-act-require-of-managers/
Tackling Sexual Harassment – Manager Training: https://www.safecall.co.uk/service/prevention-of-sexual-harassment-training/
Safecall’s whistleblowing training for managers
Safecall has delivered whistleblowing and workplace training since 1999. Its Listen Up – Whistleblowing for Managers course is CPD Certified and equips managers with the knowledge to recognise protected disclosures, avoid unlawful detriment and handle disclosure situations correctly under the current legal framework. Available online (half day) or in person (full day), it draws on anonymised real-world case material from 25+ years of live whistleblowing reports. Bespoke tailoring is available for organisations with specific sector requirements.
Find out more about Safecall’s training courses at safecall.co.uk/service/compliance-training/ or contact the team at [email protected] | +44 (0) 191 516 7720
Sources and further reading
Public Interest Disclosure Act 1998 (as amended): legislation.gov.uk/ukpga/1998/23
Employment Rights Act 2025: legislation.gov.uk/ukpga/2025
Worker Protection (Amendment of Equality Act 2010) Act 2023: legislation.gov.uk/ukpga/2023/51
Economic Crime and Corporate Transparency Act 2023 – failure to prevent fraud guidance: gov.uk/government/publications/economic-crime-and-corporate-transparency-act-2023-factsheets
Equality and Human Rights Commission – Worker Protection Act enforcement guidance: equalityhumanrights.com/guidance/worker-protection-act-2023
ACFE Report to the Nations 2024: acfe.com/report-to-the-nations/2024
Safecall Benchmark Report 2024: safecall.co.uk/resources/benchmark-report/