Klaartje Hendriks' field of work is employment law in the pharmaceutical and healthcare sectors. She is involved in individual and collective employment conditions, the consequences for personnel of mergers, takeovers, reorganizations, collective redundancies, severance schemes and negotiations on and drawing up redundancy packages, and the appointment and dismissal of directors.

She is also active in conflicts between hospitals, boards, medical specialists and within other cooperative relationships in the healthcare sector.

Her clientele includes international and national pharmaceutical companies, as well as various hospitals, healthcare centres, home care institutions and related healthcare organizations.