Management & Administration

Management & Administration

Behind every successful lawyer is a team of support staff who contribute a great deal to the satisfaction of our clients. Our lawyers could not excel without the hard work and dedication of our highly qualified and motivated administrative personnel: secretaries, accountants, legal assistants, IT technicians, receptionists and other specialist staff. These people also receive thorough training on an ongoing basis to ensure that clients are given the same outstanding service at every level.

A group of experienced managers ensures the quality of our support services:

Yvonne Koller

Human Resources


German, English, French

Contact Details

Zurich Office


Yvonne Koller is responsible for Human Resources at Lenz & Staehelin in Zurich. She has a Swiss Federal Certificate in Human Resources Management. Yvonne Koller has joined Lenz & Staehelin in 2013 after eleven years of working in the media industry, where she received additional training in Human Resources Management.


Diploma in Human Resources (2005), Swiss Certified Specialist in Human Resources with Federal Diploma (2010), Swiss Certified Specialist in Social Insurance with Federal Diploma (2017)