Varies. Deepening on the job at hand
It will depend on your role.. But most of us put more hours to the normal, to put the client first.. The rest of the dots will connect
Depends on circumstances and role. Office jobs are 9-5, technical and field teams can be working up to 18 hour days at times in pursuit of resolving critsits or closing deals.
The working hour differ by department to department, teams to teams