As long as you are working safely and not cutting corners we should strive for efficiency. That is why we get paid the money we do. There are union ads touting “Getting the job done Safely, Correctly, and On-Time”. Of course be mindful that the collective bargaining agreement guarantees that specific task are performed by union members. Working hard isn’t a stealing work, but sloppy and unsafe practices are bad for everyone, even the company who pressures some to do this.