We examine ERP usability from the perspective of Human-Computer Collaboration (HCC) and treat the use of an ERP system as a collaborative activity between the system and users. Our research objective is to explore the relationship between ERP systems collaborative capabilities and system usability as perceived by individual users. We employ Bratman’s collaboration theory as our theoretical framework, which specifies three indispensible properties of collaboration: Commitment to the Joint Activity (CJA), Mutual Responsiveness (MR), and Commitment to Mutual Support (CMS). Using the qualitative study research methodology, we conducted two field studies and found that ERP systems’ lack of collaborative properties was associated with users’ negative perception of system effectiveness, system efficiency, and user satisfaction. Based on our findings, we developed a set of design advice for incorporating collaborative capabilities into the design of ERP systems and improving the system usability.