The focus of ETHI-CA2 spans ethical aspects around the entire processing pipeline from speech and language, as well as multimodal resource collection and annotation, to system development and application. In the recent time of ever-more collection "in the wild" of individual and personal multimodal and multi-sensorial "Big Data", crowd-sourced annotation by large groups of individuals with often unknown reliability and high subjectivity, and "deep" and autonomous learning with limited transparency of what is being learnt, and how applications such as in health or robotics depending on such data may behave, ethics have become more crucial than ever in the field of language and multimodal resources. This makes ethics a key concern of the LREC community. There is, however, a surprising if not shocking white spot in the landscape of workshops, special session, or journal special issues in this field, which ETHI-CA2 aims to fill in. The goal is thus to connect individuals ranging across LREC's fields of interest such as humanmachine and robot-and computer-mediated human-human interaction and communication, affective, behavioral, and social computing whose work touches on crucial ethical issues (e.g. privacy, traceability, explainability, evaluation, responsibility, etc.). According systems increasingly interact with and exploit data from humans of all ranges (e.g. children, adults, vulnerable populations) including non-verbal and verbal data occurring in a variety of real-life contexts (e.g. at home, the hospital, on the phone, in the car, classroom, or public transportation) and act as assistive and partially instructive technologies, companions, and/or commercial or even decision-making systems. Obviously, an immense responsibility lies at the different ends from data recording, labeling, and storage, to its processing and usage. Motivation Emerging interactive systems have changed the way we connect with our machines, modifying how we socialize, our reasoning capabilities, and our behavior. These areas inspire critical questions centering on the ethics, the goals, and the deployment of innovative products that can change our lives and society. Many current systems operate on private user data, including identifiable information, or data that provides insight into an individual's life routine. The workshop will provide discussions about user consent and the notion of informed data collection. Cloud-based storage systems have grown in popularity as the scope of user-content and usergenerated content has greatly increased in size. The workshop will provide discussions on best practices for data annotation and storage and evolving views on data ownership. Systems have become increasingly capable of mimicking human behavior through research in affective computing. These systems have provided demonstrated utility, for interactions with vulnerable populations (e.g. the elderly, children with autism). The workshop will provide discussions on considerations for vulnerable populations. The common mantra for assistive technol...