At my last job we worked until the work was done. The problem was that we couldn't start our work until the developers gave us the build to test. Because of thi

At my last job we worked until the work was done. The problem was that we couldn't start our work until the developers gave us the build to test. Because of this there were days where I might work 2 hours in 8-10 hour day. There were others where I worked 18 hours in a 24 hour work day. I think using productive 'hours' of work as a unit of measure is little more fair than using lines of code as a unit of measure. What of the epic hacker of hackerness who finishes in an hour what takes most coworkers a week to finish. If he is only spending 10 hours of the week doing real productive work is he a benefit to team or is he hurting the team?