We have an old-fashion thing called "Ordine degli Ingegneri", here in Italy, which can sound something like knight stuff (we always recall to the past), while it is an organization with recognized institutional tasks. Representation of engineers (as for a trade union) is among those tasks. Membership is required by law only for certain kind of projects, mainly for buildings, and is achieved through a quite long exam and -not surprisingly- by paying an annual fee. Non-degreed technicians also have their organization, "Albo" (="registration book"), which requires exams after a practice period (2 years!).
IEEE membership is mostly a matter of Academics, but does not give automatical access to articles, which are the most interesting thing of IEEE. In fact, good companies which try to innovate usually take a look at IEEE articles, at least in my research field, electric drives.
I'm going to register as a PhD student, just to have conference discounts.
@JohnS_AZ: there is a strange tension between academics and industrials, which I don't think is worth. We should be working in the same direction...