Eaton (2000) proposes a distinct, more precise measure of available flexibility policies: the extent to which employees feel free to utilize such policies, whether formal or informal…Specifics differed, but the concept was the same: some employees did not feel free to use the policies they theoretically enjoyed. “Perceived Usability” is one way to understand whether flexibility policies that exist are meaningful to employees. It is distinct from informal policies, because it applies to each individual’s view of his or her own comfort level with using policies, not to whether others can use them.” (Schutte and Eaton)
Schutte, K.J. & Eaton, S.C. (2004). Perceived usability of work/family policies, a Sloan Work and Family Encyclopedia entry. Retrieved May 10, 2007, from the Sloan Work and Family Research Network website: http://wfnetwork.bc.edu/encyclopedia_entry.php?id=248&area=academics.