
Testimonials
Collated independently by Legal 500 research team.
'They provide quick and accurate responses to labour-related issues and constantly update the information needed.'
'Ignacio Castiglione is a highly skilled and experienced lawyer who helps provide solutions to any contingency and efficiently handles legal proceedings, with constant communication and strong value propositions for dispute resolution.'
- 'The team's strengths are their willingness to listen to the situations presented, their empathy, and their ability to provide support professionally and quickly.'
- 'José Luis Zapata, Ignacio Castiglione, and Nicolás Baglieri stand out first and foremost for their personal qualities, always attentive to the personal and professional circumstances surrounding each case, humanising the relationship, and secondly for their extensive experience in different cases, which underpins their professionalism.'
- 'Compared to other law firms, at O'Farrell you can trust that any concern will be resolved quickly and efficiently. They will take care of what is necessary and, if they can go the extra mile, they will do so, putting themselves in the client's shoes and understanding their needs. Not only do they respond to our inquiries, but they are also available to meet promptly with the company departments we need, and they have excellent contacts throughout the country.'
- 'I would like to highlight José Luis Zapata, Ignacio Castiglione, and Nicolás Baglieri for their willingness to resolve concerns quickly and efficiently, finding alternatives to solve and defuse medium- and high-complexity conflicts, whether judicial, administrative, and/or union-related. I appreciate the humane treatment of the three of them and all the partners in the firm, the time they devote to our affairs, and the proactivity they demonstrate in all their tasks. Finally, I would also like to highlight their vast experience, the quality advice they provide, and their empathy with clients and their needs.'
Key clients
- Ford Argentina
- Nokia Solutions and Networks Argentina
- Farmacity
- Pampa Energía
- TRANSENER
- YPF Energía Eléctrica
- Energía de Entre Rios
- Galicia Seguros
- Tintosur
- Antonio Luquin
- Huawei Tech Investment
- YPF
Lawyers
Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.

Next Generation Partners
Junior partners with significant recognition from clients and peers in the market and key roles on multiple matters.
Ignacio Agustín Castiglione
Practice head
José Luis Zapata; Ignacio Castiglione
Other key lawyers
Luis Antonio Montenegro; Mariano Trotz; Fernando Reto; Nicolás Baglieri; Laurtaro Gabriel Prevedini; Priscila Belen Lagoria
