Here we have a much used premise of killer in building chasing innocent but very inventive office worker.Done may times before but even with the relatively short running time of just over an hour,this movie packs a lot of punches.Good story,tension.bang up to date technically and a joy to watch.And of course well acted throughout.Check it out if you like fast paced,well made jumpy thrillers. Similar in a lot of ways to a previously unknown thriller called RUN with a young Patrick Dempsey being chased by hit men,but always one step ahead by quick thinking and improvisation.You don.t need gratuitous violence,a bucket full of profanities and OTT action to create a quality thriller.Not Safe to Work is a perfect example of this!