...Working Men marks a shift towards a more aggressive, fusion type style than Gradwohl demonstrates on some of his earlier releases. But, don't take this to mean that the entire album is aggressive fusion, only that there is a shift in the center. Gradwohl demonstrates a raw energy in places that had been restrained for the most part on some of his earlier works with Threeo and Cats & Camels... 

..Some albums require more listening than others to gain a sense of where the musicians are coming from.  Working Men by Austrian fusion group, The Powergrade, is one of those albums.  Part of this need for longer absorption latency, I think is due to the lack of inhibition that European musicians have toward stylistic boundaries which allows them to encompass a sometimes unusual scope, such as is exhibited on Working Men. 
  This album covers a range of styles and influences, but could probably best be described as jazz fusion that has a tendency towards the more hard-edged end of the fusion spectrum, though it is tactfully balanced with more sublime, straight-ahead jazz.  The rhythms and backdrops are a mix of clean-toned, jazzish tonality progressions and hard-edged, grinding, aggressive riffing.  It makes for an interesting combination that does not allow the listener to get to complacent with one type of sound or feel...  chrisruel.com