Why Are Tube Workers Striking Over a Four-Day Week?
TfL says it's a voluntary proposal, with no reduction in contracted hours. RMT has opposed it anyway, and the disagreement has produced a wave of London Underground strikes through spring and summer 2026. Here's what's actually being disputed.
What the dispute is actually about
Transport for London has proposed allowing London Underground staff to work a four-day week — described by TfL as voluntary, with no reduction in contractual hours (meaning the same total hours would be compressed into fewer, longer days) and intended to improve flexibility and reliability. The RMT union has opposed the change, and the disagreement escalated into a sustained campaign of strike action through the spring and summer of 2026, following five hours of talks at ACAS (the conciliation service) that failed to resolve it.
TfL has publicly expressed frustration at the continued action, stating it is "bitterly disappointing" that RMT chose to proceed with strikes despite "repeated assurances that the four-day working week proposals will remain voluntary" — indicating the core disagreement isn't only about the proposal's content, but also about how much the union trusts assurances that a currently-voluntary scheme won't become effectively compulsory over time.
2026 so far
Two 24-hour strikes went ahead in April 2026, including a period of significant disruption from midday on Tuesday 21 April to midday Friday 24 April, with services reduced from mid-morning and only gradually recovering into the following afternoons. Strikes planned for May were called off, but further action was then moved forward into June. As of the most recent updates, the RMT and TfL's underlying dispute remains unresolved, with the Elizabeth line, DLR, London Overground, trams, and most buses continuing to run largely as normal throughout — meaning disruption is concentrated specifically on the London Underground network itself, not London's transport system as a whole.
The real cost to commuters
Service delay refunds are generally not paid during strike action itself, since strikes are typically treated differently from ordinary service failures in TfL's compensation rules. The real cost to individual commuters extends well beyond the fare itself: a journey that would normally cost a single Tube fare can become a train fare plus a bus plus a taxi for the final stretch, and someone unable to reach work, or arriving late enough to lose paid hours, faces a cost that often outweighs the transport bill many times over. This lands hardest on hourly-paid staff, gig workers, the self-employed, carers, and anyone juggling childcare or fixed appointments around a specific arrival time — groups with far less flexibility to simply work from home or shift their schedule than salaried office workers with flexible employers.
Reactions
“It is bitterly disappointing that despite five hours of meetings with the RMT at ACAS and repeated assurances that the four-day working week proposals will remain voluntary, RMT has chosen to continue with its disruptive strike action.”
“Opposition to the proposed change has continued despite TfL’s assurances, reflecting concerns that go beyond the voluntary framing of the current offer.”
In the news
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