Random anecdote: I worked for years in the digital agency space and we basically just sold billable hours. Hours worked was everything. When crunch time hit, you worked until you were done. I once clocked 110 hours after working straight through two weekends on a remote work site to finish a huge project and when it was done, I was just there by myself. No one said a word. Boss didn't say anything, account manager didn't say anything, client didn't say anything. I never felt more alienated from a job than that moment.