Building Up by Jim Cline
Price: $0.99 USD. 121910 words.
Published on July 1, 2009. .
Their corporate bosses have given them a dangerous job intended to fail - the building of the first small Space Elevator - but when they succeed at that task, they are transferred to another project, that of finishing building the first classical wheel-type Space Station in LEO - where they discover that it is a prison from where they are intended to never return. (1st in Jim Cline's sci fi saga)