+50
Years of experience
50
Professional
6.500
Monthly payrolls
3.200
Annual training hours
85%
of our customers recommends us
7,550
Outsourcing for professional firms
Outsourcing for lawyers, advisors and professional firms
Complement your services without investing in staff, software, or training. We collaborate with your brand or as part of your team.
At Sellarès Assessors we offer a specialised outsourcing service for professionals like you: lawyers, tax advisors, social graduates, property administrators or brokerages. Outsource labour, tax or accounting services to us, without assuming fixed costs. Save time, expand your offer and build customer loyalty without losing control.
- Calculation and preparation of monthly payslips
- Social Security Settlement (TGSS)
- Registrations, deregistrations and modifications in Social Security
- Employment contract management and renewals
- Control of absences, medical leaves and incidents
- Company certificates and procedures with the SEPE/INSS
- Work dashboards with Power BI
- Digital portals for companies and workers
- Digital signature of employment documents
- 24/7 employee registration
Contact us
Our payroll management service in Barcelona includes everything your company needs to comply with labor regulations and keep daily operations under control.
Monthly payroll management
- Calculation and preparation of monthly payslips
- Social Security Settlement (TGSS)
- Control of absences, medical leaves and incidents
- Company certificates and procedures with the SEPE/INSS
Registrations, cancellations and hiring
- Registrations, deregistrations and modifications in Social Security
- Employment contract management and renewals
- 24/7 employee registration
Technology and reporting
- Work dashboards with Power BI
- Digital portals for companies and workers
- Digital signature of employment documents
Our outsourced labor management service in Barcelona includes everything your company needs to comply with regulations and keep daily operations under control.
Registrations, cancellations and hiring
- Registrations, deregistrations and modifications in Social Security
- Employment contract management and renewals
- 24/7 employee registration
Technology and reporting
- Work dashboards with Power BI
- Digital portals for companies and workers
- Digital signature of employment documents
Monthly payroll management
- Calculation and preparation of monthly payslips
- Social Security Settlement (TGSS)
- Control of absences, medical leaves and incidents
- Company certificates and procedures with the SEPE/INSS
Outsource only what you need, how you need it
Services tailored to your specialty
- Separate labor, tax or accounting outsourcing
- Comprehensive management if you prefer
- For specific cases or continuous collaboration
- Adapted to the size and focus of your office
Flexible collaboration models
- White label: the customer does not know that we are behind it
- Direct contact with your customer, if desired
- Technical coordination between teams
- Total respect for the original professional relationship
Conditions designed for professionals
- Flexible volume or service rates
- Confidentiality guaranteed by contract
- Technical, legal and operational support
- Joint tools can be used
You know how to do more, but time, staff, or software hold you back
You can't cover all the areas that your customers ask you for
Outsource what you don't manage in your office and offer more without risk.
Your team is stretched to the limit and you don't want to hire more staff
We help you take on peaks of work or areas that you do not master.
You don't want to lose control of your customer
We work as a white label, with total discretion.
Your profitability suffers from having to refer services abroad
With us you can keep the customer, build customer loyalty and make them profitable.
You're concerned about technical quality or regulatory compliance
Sellarès works with audited processes and proven tools.
More and more services are demanded of you that are not in your core
We expand your offer, you maintain your identity.
Collaborating is not giving ground: it is growing without risks
We know how important your relationship with your customer is to you. That’s why our outsourcing service is designed to adapt to you, not the other way around. You can count on us as a shadow technical team or as visible experts. You decide.
You don’t need to invest in people, programs, training, or take risks. We provide the knowledge, the infrastructure and the responsibility. You choose which services you want to offer, when, and how to present them. With clear agreements, defined margins and no conflict of interest.
Digital support, traceability and coordination
We have our own technology and shared tools that allow us to work with you in real time, with traceability, security and agility.
- Integrated document platform
- Control of statuses and key dates
- Tools like Verticatu and customer portals
- Secure communication and delivery protocols
Meet Sellarès Assessors
At Sellarès Assessors we have been accompanying SMEs for more than five decades.
Our multidisciplinary team offers comprehensive advice in the labour, tax, accounting and legal areas, with a strategic, human and technologically up-to-date perspective.
Figures that support our commitment
More than 50 years collaborating with firms, advisors and professionals of all kinds. They choose us for our discretion, our technical solvency and for the flexibility to adapt to each model of professional relationship.
+50
Years of excellence
50
Professional
6.500
Payslips per month
3.200
Annual training hours
85%
of our satisfied customers
7,550
Annual tax settlements
Sellarès in numbers: References and data
+50
Years of experience
50
Professional
6.500
Monthly payrolls
7.550
Annual tax settlements
3.200
annual hours invested in training work teams
85%
of satisfaction of our customers
Xavier Sellarès Esmarats
Socio-Director
Director Área Sociolaboral
Responsable Administración de Personal, Procesos y TIC
Graduado Social Colegiado
Natàlia Sellarès Esmarats
Responsable Área Sociolaboral
Técnica en Derecho Laboral y de la Seguridad Social. Máster en Habilidades Directivas.
Josep Mª Sellarès Esmarats
Socio-Director
Director Área Servicios Generales
Director Área Inmobiliaria
Agente Inmobiliario
Programa Dirección General EADA
Sergi Laborda Estefanía
Socio-Director
Director Área Económica
Diplomado en Ciencias Empresariales. Máster en Auditoria de Cuentas.
Laura Ariza Serrat
Directora Área Legal, Directora de RRHH
Abogada
Certificada en Compliance
Máster en Habilidades Directivas
A technical team that understands your professional business
Do you have doubts about how outsourcing for law firms works?
What type of law firms can work with you?
We work with lawyers, consultancies, consultants, social graduates, economists, tax technicians, brokerages and other professionals. We adapt the service to the profile.
Can I hire only the labor or tax part?
Yes. You can outsource only what you need. We also offer comprehensive management if you prefer to delegate everything.
How does the white label model work?
We remain invisible to your customer. You are the only interlocutor, we work from behind the scenes with total confidentiality.
Can I introduce you to the client and have you talk directly to him?
Yes. In the open collaboration model, we talk to your client as part of your team. We agreed on the protocols together.
Do you sign confidentiality agreements?
Yes. It is part of the standard agreement. We guarantee the protection of information and respect for the end customer.
What benefits does this service have for me as an advisor?
You can offer more services, improve your competitiveness, increase your turnover and build customer loyalty, all without having to invest in technology or staff.
Contact us without obligation
Take the first step now
Fill out the form and an expert will contact you to answer your questions.
Response in less than 24 hours.
- Calculation and preparation of monthly payslips
- Social Security Settlement (TGSS)
- Registrations, deregistrations and modifications in Social Security
- Employment contract management and renewals
- Control of absences, medical leaves and incidents
- Company certificates and procedures with the SEPE/INSS
- Work dashboards with Power BI
- Digital portals for companies and workers
- Digital signature of employment documents
- 24/7 employee registration