I have had contact with english (U.K. by way of a research assistantship) and german system (by way of my original professional education as a engineer) I'd say:
1. there are many aspiring graduates and a limited market to absorb'em. So offering a additional titel (e.g. a MSc in addition to the german BSc or MSc* aequivalent title already at hand) on your first engineering job application forms, might gain you a plus with some personal department. Further it gets you some additional time looking for a job, if after completion of the BSc you can not get a job right away. But basically I think it's just a trend (like that particular color of the year in fashion) popped up, also to be seen in context with the globalization and english as dominant language, might help to increase articulation, communication skills.
2. A trend seen too is, that jobs assigned to PhD and MSc holders are assigned to BSc's in Germany, a established fact of life in english speaking countries. This derives from the fact that rather few high level research and developement (R&D) posts can really benefit from a MSc or PhD titel holder(representational functions are a special case)
Even these might by filled in with a bright MSC or talented BSc candidate at times, or in case of lack of application of a suitable PhD or MSc canditate. This does not imply that holding a PhD or MSc might not have advantages for the right job.
I have seen some guy (femals are a rather estinct species in classical engineering branches) which showed the MSc, seen someone who went right to the PhD from first class honours BSc and I am sure he shines even more with PhD and I have worked with real acute BSc guys too (I am a BSc myself with a rather strong bias for selective autodidactic scientific add-on education) so it really depends who you met
Only IF the MSc or PhD leeds to a particular specialisation not covered by the BSc, e.g. in demand in a specific area or with a specific employer, or as with the german Dipl.-Ing.* gives you a plus wrt in depth base knowledge - so that it gains you real additional prospects - evtl. effort and/or time/money invested in a prolonged or additional educational period seems well spent
I am not saying that it hurts if you are young, but if you are not it might
Title legend (AFAIK)
BSc is equated with the german Dipl.-Ing(FH) (with medium duration 3.5 to 4 years) by european and english speaking institutions
MSc is equated to the german Dipl.-Ing.* (medium duration 6-7 years - from scratch as this is not a add-on of 1-2 years as with the MSc but a integral course as the BSc, but more intense in terms of maths and physics in particular)
PhD is equatable to the german Dr.-Ing.
There is further a german Dipl.-Ing.(BA) which has a duration of 1-1.5 years of study plus same amount of time working on the job, which is nominated as a possible title in job offers (I do not know the aequivalent for this title in the english educational system)
Cheers, Frank
IFE Bonn Germany