||Sustainability is the ability to self-sustain oneself while utilising resources without depleting those same resources; providing the ability to allow fur-ther sustenance and continuing sustainability (WCED, 1987). Organisational sustainability is the ability of an organisational system to create balance for human, social and natural resources needs without depleting those re-sources. A sustainable work system on the other hand, is a work system enabling the sustainability of those in it, ensuring that workers can sustain themselves and the environment without compromising the surrounding system (Lifvergren et al., 2009). Therefore a work system is only sustainable when it ensures it does not deplete the resources it requires to function optimally (Kira & Eijnatten, 2009) while ensuring a system and a future for it and the workers it requires.
Mobile phones have provided the ultimate tool and availability to work any-where and anytime. However, this “digital leash” provides limited opportunity for the employee to have downtime as it is becoming more accepted that the phone and the user will always be available and therefore contactable anywhere and anytime. This therefore results in a perpetual state of work engagement. Research indicates that mobile devices increase work-life conflict (Middleton, 2007). This adaptation has sometimes been framed as an “addiction” or the popular renaming of BlackBerry to CrackBerry (Aldoory, Hua, Elizabeth, & Bey-Ling, 2008; Dery & MacCormick, 2007; ITS, 2006; Mazmanian, Yates, & Orlikowski, 2006a, 2006b; Rosen, 2004). Moore and Wen’s study (2009) found that respondents had little or no work-life balance, with business executives reporting that challenges for balancing their professional and personal life were enormous resulting in clear emerging areas of concern in relation to parenting and elderly care responsibilities (Moore and Wen, 2009:226). Rationally, the usage of such devices leads to lengthening of work days as there is a potential constant channel for communication all day, every day (Wajcman, Bittman, & Brown, 2008).