PW.A is different.  Most developers bill you for all the time for each task.  It is explained better by this example: A client has engaged the services of PW.A to install and configure a plugin. The task starts at 8:00 am.  PW.A will start a backup of the site first before installing the plugin. Once the backup starts until it stops is considered “idle work time”.  In this example, the backup began at 8:10 am and ended at 8:30 am. So 20 minutes of “idle work time” so far.   The plugin is installed. After the installation, PW.A notices that the new version of this plugin does not configure in the same way as the previous version did. So at 8:40 am, PWA does some research on the new configuration method for the plugin.  We do not feel it is fair to charge the client for this time, as we need to know the new configuration for future clients. The research ends at 10:00 am. So 80 minutes of “research or learning time”. At 11:00 am the task is completed.   n the above example, it took 3 hours from start to finish, but PW.A will adjust that time by 120 minutes (2 hours) which means the “dedicated time to perform the task” is only 1 hour.  This 1 hour will be charged against the “time bank”, not the 3 hours.