Strong Law and Compliance (Strong Abogados)

Strong Law and Compliance, also known as Strong Abogados, is a Spanish legal, tax and accounting firm with offices in Barcelona, Madrid and Tenerife. It offers Employer of Record services in English and Spanish, hiring and paying workers selected by the client, and acts as a white-label Spain provider for global EOR and PEO companies. It does not operate as a temporary work agency (ETT).

Listed in 1 country list Prominent in 1 market

By TheEORDirectory Editorial Team

Researched from company registers and providers' own published terms, and reviewed by a second editor before publication.

Last updated 5 November 2026

Fact	Value
Established	2005
Founders	Pura Strong, Tom Strong
Region / headquarters	Spain / Barcelona + Madrid + Tenerife
Website	strongabogados.com ↗
What it does	Strong Law and Compliance, also known as Strong Abogados, is a Spanish legal, tax and accounting firm with offices in Barcelona, Madrid and Tenerife. It offers Employer of Record services in English and Spanish, hiring and paying workers selected by the client, and acts as a white-label Spain provider for global EOR and PEO companies. It does not operate as a temporary work agency (ETT).
Entry price	Quote-based (no public price)
Last verified	4 Nov 2026

How it operates by country

🇪🇸 Spain

SpainWork is Strong Law and Compliance's EOR offering, associated with Incwell. Strong says it employs through its local entity and offers white-label delivery to other EOR firms. Published offices: Gran Vía 6, 4ª, Madrid; Rosselló 132, 3ª, Barcelona. Related SpainWork/EOR IN SPAIN branding is counted once.

Spain profile

SpainWork is the Employer of Record service of Strong Law and Compliance, the firm long known as Strong Abogados. It is a family-owned, Spain-only legal, tax, accounting, payroll and immigration practice with offices in Madrid (Gran Vía 6), Barcelona (Rosselló 132) and Santa Cruz de Tenerife. Its own pages date its start to 2000 on the about page and 2005 on the timeline. Pura and Tom Strong founded the firm, and their son Teo Strong became CEO in November 2025. Alongside direct EOR, it says it acts as white-label Spanish provider for other EOR and PEO companies.

The website is owned by Strong Law and Compliance LLC, a Florida company (EIN 45-1555444), which registered a Spanish branch on 22 April 2026: Strong Law and Compliance LLC Sucursal en España, NIF W0402435B, Gran Vía 6, 4th floor, Madrid, with Teo Rafael Strong Llorente as permanent representative. There is also a Spanish company, Strong Law and Compliance SL (NIF B44642593, Calle Fuencarral 139, Madrid), incorporated in February 2023 with share capital raised to EUR 355,000 in 2025, whose sole shareholder and director is Purificación María Llorente Sánchez. The EOR page says staff are hired 'through our local business entity' but does not say which of the two employs them. Neither appears in the Ministry of Labour's register of authorised temporary-work agencies (ETT), which Spanish law requires for supplying workers to a user company.

Its price is published: a flat EUR 195 per employee per month covering employment administration, payroll, tax filings and labour-law compliance, with nothing charged to employees and no setup fee stated. It says hires can start within 24 hours of Seguridad Social registration. Visas, Beckham Law, company formation and accounting are handled in-house. No G2 or Trustpilot listing was found.

Spain facts

EOR brand and operator	SpainWork, the EOR service of Strong Law and Compliance (formerly Strong Abogados). The website owner is Strong Law and Compliance LLC, a Florida limited liability company (EIN 45-1555444), 7901 4th St N, Suite 300, Saint Petersburg, Florida.
Spanish employing entity	'Our local business entity' (provider wording); not named. Candidates on the Mercantile Register are the Florida LLC's Spanish branch and the Spanish company Strong Law and Compliance SL. Which one employs SpainWork staff is unverified.
CIF / NIF	Branch: W0402435B (Strong Law and Compliance LLC Sucursal en España, Registro Mercantil de Madrid sheet M-885398). Company: B44642593 (Strong Law and Compliance SL, sheet M-784234). Neither is published on the SpainWork page.
Registered addresses	Branch: Calle Gran Vía 6, 4th floor, 28013 Madrid (the firm's Madrid office). SL: Calle Fuencarral 139, door C, 2nd floor, 28010 Madrid. Other offices: Rosselló 132, 3rd floor, 08036 Barcelona, and Milicias de Garachico 1, office 46, 38002 Santa Cruz de Tenerife.
Incorporation and capital	Branch registered 22 April 2026 (BORME 29 April 2026), with operations from 20 March 2026; no assigned capital. SL incorporated 2 February 2023 with EUR 5,000 capital, raised by EUR 350,000 to EUR 355,000 in May 2025.
Directors and representatives	Branch: Teo Rafael Strong Llorente, permanent representative (April 2026); Lina Llorente Sánchez and Víctor Manuel García Pérez, joint and several attorneys (June 2026). SL: Purificación María Llorente Sánchez, sole shareholder and sole director since 2023; Teo Rafael Strong Llorente and Lina Llorente Sánchez, attorneys since March 2025.
Founders and history	Founded by Pura Strong and Tom Strong. The about page says Pura Strong started the firm from home in 2000, while the timeline gives 2005 as the founding year. Teo Strong, their son, has been CEO since November 2025. An earlier Madrid company, Strong Law SL (2017, later Incwell International SL, sole owner Thomas Rushmore Strong Gruner), was dissolved in 2019. The register names behind 'Pura Strong' and 'Tom Strong' are inferred from these filings, not confirmed by the firm.
ETT authorisation	None found. Searches of the Ministry of Labour's ETT register by NIF B44642593 and W0402435B and by the name 'Strong' returned no entries (26 October 2026). The firm does not claim to be an ETT.
Model	Direct EOR with a published flat fee. White-label Spanish provider for other EOR and PEO firms (provider claim). The site also describes a 'direct model' in which the client registers as a non-resident employer with its own Spanish tax ID and the firm runs payroll.
Contract types and onboarding	The client supplies employee data and the employee signs tax Form 145. The firm registers the employee with Seguridad Social and SEPE, and uploads the contract, payslips and tax forms to its Tempo client portal. Hiring is possible within 24 hours once Seguridad Social registration is in place (provider claim). The EOR page describes the contract as the form issued after SEPE registration, a simplification, since Spanish law requires written contracts for most contract types.
Payroll and statutory	Payroll, IRPF withholding, Seguridad Social contributions and payment of salaries and taxes from Spanish bank accounts; benefits administration including holidays and birth leave; time tracking; termination compliance. It describes itself as an authorised Sistema RED provider for Seguridad Social filings.
Immigration and tax	Skilled-worker and intra-company transfer visas, digital nomad visa, NIE and Social Security numbers for employees, and Beckham Law (special expatriate tax regime) applications. The firm asks to be contacted before an offer is made to a non-EU hire.
Entry price	EUR 195 per employee per month, flat, covering employment administration, payroll, tax filing and labour-law compliance; nothing charged to employees; a cost calculator on the SpainWork page. No setup fee or deposit is stated.
Provider EOR pages	strongabogados.com/spainwork and https://www.strongabogados.com/eor-spain ↗

Services in Spain

SpainWork Employer of Record	Hires employees in Spain through what the firm calls its local business entity (unnamed; a Madrid branch of the Florida LLC and a Madrid SL are both registered), for a flat EUR 195 per employee per month. Covers Seguridad Social and SEPE registration, contracts, payroll, IRPF and contribution payments, benefits administration and terminations. Hires can start within 24 hours of Seguridad Social registration (provider claim). No ETT authorisation is held or claimed.
White-label EOR partner and direct payroll	Acts as Spanish in-country provider for other EOR and PEO companies, with billing adapted to the partner (provider claim). For clients that register in Spain as a non-resident employer, it runs payroll and compliance under a 'direct model', with the client as the legal employer.
Payroll, HR and the Tempo portal	Spanish payroll with payslips, Seguridad Social filings as a Sistema RED provider, time tracking, leave and termination handling. Documents are delivered through Tempo, the firm's own client portal. Guides cover the Spanish payslip, birth and childcare leave, paid leave and dismissal.
Immigration and Beckham Law	Work visas for skilled workers and intra-company transferees, the digital nomad visa, NIE and Social Security numbers, relocation, and Beckham Law applications for the special expatriate tax regime, all handled in-house by the firm's immigration and tax staff.
Company formation, accounting and tax	Spanish company and branch formation, including the Canary Islands, non-resident and intra-EU VAT registration, bookkeeping and annual accounts, corporate and personal tax filings, and Xero and QuickBooks set-up for VeriFactu compliance, for clients moving from EOR to their own entity.
Legal and labour advice	Labour lawyers for dismissals and disputes, and commercial, property, inheritance and arbitration work. Legal staff are based in Madrid, Barcelona and Tenerife, with service in English and Spanish and other languages on the site.

Strengths and watch-outs in Spain

✓ The lowest published Spain EOR price the directory found: a flat EUR 195 per employee per month, nothing charged to employees, and a public cost calculator.
✓ A Spain-only, family-owned legal, tax and payroll practice with offices in Madrid, Barcelona and Tenerife, founded in the early 2000s, with legal, payroll, immigration and tax staff in-house.
✓ Immigration and Beckham Law in-house, useful for relocating non-EU hires and expatriates who qualify for the special tax regime.
✓ Fast stated onboarding, within 24 hours of Seguridad Social registration, with payslips and contracts delivered through its own Tempo portal and Sistema RED filing.
✓ A path beyond EOR: a direct-employer payroll model, company and branch formation, and accounting, so clients can move to their own Spanish entity with the same firm.
✗ The Spanish employing entity is not named on the EOR pages. Two registered candidates exist, a Florida LLC branch registered only in April 2026 and a Madrid SL, so clients should obtain the employer's name and CIF in the contract.
✗ No ETT authorisation was found for either company in the Ministry of Labour register. Supplying workers to a user company without one can be treated as unlawful assignment of workers (cesión ilegal) under article 43 of the Workers' Statute, so the legal structure should be reviewed.
✗ The website owner and contracting party for online services is a Florida LLC under Florida law, and the dates on the about page (2000) and the timeline (2005) differ.
✗ No G2, Trustpilot or Capterra reviews; the only reviews found are a handful of Google-sourced reviews on a directory listing, with no published average.
✗ The EOR page's description of a Spanish employment contract as only a government form understates written-contract requirements, so contract terms should be checked.

Reviews

G2, Capterra and Trustpilot: no listing found for SpainWork or Strong Abogados (Trustpilot checked 26 October 2026).
Google: a directory mirror of the Google listing for Strong Abogados at Calle Fuencarral 139, Madrid, shows five reviews from 2019 to 2023, including praise for individual staff and for keeping a client compliant with Spanish law. No average rating is shown, and the Google Business Profile itself was not checked: unverified.

Reviews are reported as found and are not verified by the directory.