This article explores equine-assisted social work (EASW). Horses' capacities to mirror human emotions create possibilities for authentic relationships between clients and staff. This study examines what eases or counteracts the horse's capacity to facilitate relationships perceived by humans to be authentic. Video recordings of the human-horse interactions of three staff members and four female self-harming clients aged 15-21 years in a residential treatment facility were analyzed. The findings show that if the staff gave instructions and advice similar to traditional equestrian sports in combination with viewing the horse as an object, EASW is not facilitated. EASW seems to be facilitated when the horse is perceived as a subject by both staff and clients, provided that the staff gave meaning to the horse's behavior. The staff needed to highlight empathy for the horse when the horse is not able to fulfill its task without adding depth to the client's performance, to avoid raising defense mechanisms. The essence of EASW were perceived as eased by staff members when they focus on the client's emotions and help the client understand that the horse is acting in response to the client's and the staff´s behavior through mentalizing and enacting emotional labor in regarding the horse as a subject. The results indicate the need for higher demands on staff members in order to facilitate EASW.Depending on whether the staff and the clients focus on performance or on emotions, different positive or negative outcomes on communication, self-confidence, self-esteem, and self-image will be likely to emerge.Keywords: adolescents, emotional labor, equine-assisted social work, mentalizing, self-injury MENTALIZING AND EMOTIONAL LABOR FACILITATES EASW 3Mentalizing and emotional labor facilitate equine-assisted social work with self-harming adolescents Equine Assisted Social Work (EASW) may contribute positively to the treatment of adolescents with psychiatric disorders, or those who are at risk for developing such disorders.It may be of value to develop social skills, feelings of mastery, meta-cognition and reflectivity abilities, self-confidence and self-esteem in these individuals (Bizub, Joy, & Davidson, 2003;Dell, Chalmers, Bresette, Swain, Rankin, & Hopkins, 2011;Dell, Chalmers, Dell, Sauve, & MacKinnon, 2008;Hauge, Kvalem, Pedersen, & Braastad, 2013;Holmes, Goodwin, Redhead, & Goymour, 2011;Klontz, Bivens, Leinart, & Klontz, 2007; Macauley & Guitierrez, 2004;Rothe, Vega, Torres Campos Soler, & Molina Pazos, 2005;Rothe, 2005;Smith-Osborne & Selby, 2010), as well as to contribute to the development of communication skills, emotional awareness and regulation, reduce anxiety, and provide opportunities for experiencing authentic relationships (Bizub, et al., 2003;Carlsson, Nilsson-Ranta, & Traeen, 2014;Karol, 2007). Even though not all studies point in the same positive direction (Ewing, MacDonald, Taylor, & Bowers, 2007;Greenwald, 2001), there is reason to explore how EASW may be used in the treatment of different patient ...