Sustainable Workplace Mobility Plan (PMST): what it is, who must comply and how
Spain's Sustainable Mobility Law 9/2025 requires workplaces with more than 200 people to have a PMST in place before 5 December 2026. This guide explains the rule in plain language and how to cover the shared-mobility measure with verifiable data.
No meetings: we send you a video and documentation by email and answer your questions the same day.
What the PMST is
The Sustainable Workplace Mobility Plan is the document in which a company or public body analyses how its workers get to the workplace and sets measures to reduce single-occupancy car use, emissions and commuting accidents. It is regulated by article 26 of Law 9/2025 of 3 December on Sustainable Mobility, published in the Official Gazette on 4 December 2025 and in force since the following day.
It is not a formality: the plan must start from a real diagnosis of commuting, set targets, apply concrete measures and measure results every two years. That is why companies that approach it with data from the start finish sooner and at lower cost.
Who must comply
The obligation applies to private companies and public-sector bodies meeting any of these conditions:
- Workplaces with more than 200 workers whose usual place of work is that site.
- Sites with more than 100 workers per shift, even if the total is below 200.
- Each site counts separately: a company with several sites may be obliged at only some of them.
- Smaller companies are not obliged, but may draw up a voluntary plan and access the same aid and benefits.
Industrial and business parks: when several workplaces share one location, the law provides for coordinated information-sharing mechanisms. In practice, a joint carpooling plan for the whole park serves every obliged company on site.
What the plan must contain
Article 26.3 lists the solutions a PMST must consider. Not all apply to every site, but the plan must justify which ones it adopts:
- 1Active mobility: walking and cycling, with secure parking and changing rooms.
- 2Collective transport: shuttles, agreements with public transport, compatible timetables.
- 3Zero- and low-emission vehicles and charging infrastructure on site.
- 4Shared and collaborative mobility: carpooling among staff.
- 5Remote work and flexible hours where the activity allows.
- 6Road safety: prevention of commuting and on-duty accidents.
- 7Offsetting the residual carbon footprint of commuting.
- 8Consistency with the municipality's sustainable urban mobility plan (PMUS), where one exists.
The plan is drawn up with the participation of the workers' legal representatives, and its monitoring is reviewed every two years with a results report.
Deadlines and penalties
- 5 December 2025
Law 9/2025 enters into force. Initial 24-month period to implement the PMST.
- 20 March 2026
Royal Decree-Law 7/2026 shortens the period to 12 months.
- 5 December 2026
Deadline to have the plan drawn up and implemented at obliged sites.
- Every 2 years
Monitoring report and plan renewal. Failing to submit it is a minor offence (€101 to €2,000) and may lead to repayment of mobility subsidies received.
How to comply in five steps
Diagnosis
Commuting survey: origin, mode of transport, timetable and shift of each person. It underpins the whole plan and is what inspectors check first.
Targets
Share of solo car trips to cut, kilometres and emissions to avoid, deadlines. Measurable targets, not statements of intent.
Measures
Pick the article 26.3 solutions that fit your site. Carpooling is the fastest to roll out: no works and no third-party agreements.
Negotiation
Present the plan to the workers' legal representatives and include their input. Document the process.
Monitoring
Measure from day one: participants, trips, kilometres and CO₂ avoided. With continuous data, the biennial report writes itself.
How Kidstoride covers the shared-mobility measure
Kidstoride does not write the plan for you: it provides the carpooling measure with the verifiable record the law asks for, ready to be included in the company's or park's PMST.
Verified carpooling among staff
Identified drivers (ID and number plate), matching by shift and route, in-app chat and a record of every trip. No personal phone numbers shared.
Data dashboard for diagnosis and monitoring
Active participants, shared trips, kilometres and CO₂ avoided, monthly trend. Aggregated and exportable for the biennial report and the sustainability report.
Downloadable PMST certificate
PDF document with the period's results and public QR verification, to attach to the plan and present to the authorities or auditors.
CAE energy-saving credits for drivers
Shared commutes generate energy-saving certificates (TRA040 sheet) that reward the driver. The measure pays for itself.
Sites in industrial parks get their own page with a QR code for the whole park, and for municipalities the same system feeds the local mobility plan (PMUS).
Frequently asked questions about the PMST
My company has 250 employees across three sites. Is it obliged?
The threshold applies per workplace, not per company. Only sites with more than 200 people or 100 per shift are obliged. With 250 employees across three sites of under 200 each, the obligation does not apply, although a voluntary plan is still advisable.
What happens if we do not have the plan on 5 December 2026?
The law classifies non-compliance as a minor offence, with a fine of €101 to €2,000, and allows public mobility subsidies received to be reclaimed. The reputational cost with clients and tenders that require ESG criteria is usually greater than the fine.
Does carpooling count as a PMST measure?
Yes. Article 26.3 expressly lists shared and collaborative mobility among the plan's solutions. What the authorities value is that the measure is implemented and measured, not merely planned: hence the importance of the trip record.
Does the plan have to be registered or notified to any authority?
The law requires the plan to be drawn up and implemented and a monitoring report to be submitted every two years. Implementing regulations may set out the notification procedure; keep the plan, the negotiation minutes and the monitoring data to prove compliance when required.
How long does the carpooling measure take to roll out?
With Kidstoride, registering the company or park is immediate and staff sign up with a link or QR code. The first route matches appear as soon as people on the same shift are registered, usually within the first week.
What if we are in a park with other obliged companies?
That is the ideal case. The law provides for coordination between sites sharing a location, and a park-wide carpooling programme multiplies timetable matches. Each company gets its own aggregated data for its plan.
Is commuting data personal data?
Diagnosis and monitoring use aggregated, anonymous data. Kidstoride never stores GPS positions in its database or shares people's home addresses with the company; the dashboard only shows aggregated metrics.
How much does it cost?
Signing up to their site's page is free for workers. Company and park plans depend on the size of the site; we send you the terms by email with the documentation, with no meetings or sales calls.
Information notice
This content is informative and does not constitute legal advice. Sources: Law 9/2025 of 3 December on Sustainable Mobility (Official Gazette of 4 December 2025) and Royal Decree-Law 7/2026 of 20 March. Check the consolidated text in the Official Gazette and your employment advisers for your specific case.
Kidstoride provides the shared-mobility measure and its record; drawing up and negotiating the plan is the company's responsibility.
Only a few months left. Start with the measure that rolls out in days.
We email you the dashboard video, the certificate template and the terms for your site or park.