This is probably the best place for somoene new to Ligotti to start exploring his fiction. The book consists of one longer work (the title story) and two shorter tales. These are all on the theme of 'corporate horror' - the workplace in this book is a magnified, distorted version of the dog-eat-dog office politics of our real-world companies, with the entity of the corporation itself being the most horrific thing. In the title story, the central character obtains certain dark powers and uses them to extract revenge on his ex-colleagues.
From this description it is probably clear the Ligotti's work is way beyond simple, gore-soaked horror, and indeed the horror tag should be seen as merely the best fit available genre-wise, rather than an exact description. However he is certainly unique and writes well - fans of such inteligent horror authors as Ramsey Campbell and Robert Aickman will enjoy this, as well as those who admire the twisted worlds of Kafka.