European UnionMy company merged and my pension rights changed. Are acquired pension rights protected?
Yes, acquired pension rights are protected under EU law when a company merges — they cannot be reduced or lost due to the merger.
What the Law Says
EU law guarantees that pension rights you have already earned — known as 'acquired rights' — must be preserved when your employer undergoes structural changes like mergers, acquisitions, or reorganisations.
The main legal protection comes from Directive 2014/50/EU on the mobility of workers, which applies across all EU Member States. Although primarily focused on portable pensions, it reinforces the principle that accrued pension entitlements are vested rights.
Article 5(1) of the Directive states that 'Member States shall ensure that workers do not lose their acquired rights to supplementary pension benefits as a result of a change in their employment relationship, including where such change results from a transfer of undertaking, merger, acquisition or insolvency.' This means your already-earned pension benefits — such as defined benefit accruals or vested defined contribution balances — must remain intact.
Importantly, this protection applies only to rights already acquired before the merger. Future accruals (e.g., future years of service or new benefit formulas) may be changed, but not past entitlements.
Statutory TextMember States shall ensure that workers do not lose their acquired rights to supplementary pension benefits as a result of a change in their employment relationship, including where such change results from a transfer of undertaking, merger, acquisition or insolvency.
— Directive 2014/50/EU, Art. 5(1) — Protection of acquired rights
What Courts Have Said
EU courts have consistently upheld the principle that acquired pension rights are fundamental and non-derogable under EU law.
Confirmed that occupational pension schemes fall within the scope of EU social policy and that rights accrued under such schemes are protected as part of workers’ conditions of employment.
Reinforced that acquired rights — including pension entitlements — must be safeguarded during transfers of undertakings, establishing continuity of employment and associated benefits.
What to Do
Check your pension statement for the exact value and nature of your accrued rights (e.g., years of service, defined benefit accrual rate, or vested DC balance).
Review the merger announcement and any communication from your employer or pension provider about changes to the scheme — look specifically for language about 'acquired rights' or 'vested benefits'.
Contact your national pension authority (e.g., Pensions Ombudsman in the UK, or equivalent body in your Member State) if you believe your accrued rights have been reduced or denied.
If unresolved, seek advice from a labour lawyer or trade union — many EU countries offer free legal aid for employment-related pension disputes.
Sources
Not legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: 2026-06-08.