Glad to help.

@Anonymous 

I just realized you asked about "is OT job-specific or not."

Example:

We work on three job sites on any one specific date, and during the summer, the day runs from 5am to 8 pm. This is called Construction Season; our other Seasons are Hunting Season (Fall) and Ski Season when we don't work. During construction season, we work longer days. That means nearly every day might run into OT under the Labor regulations. But that is indirect Overhead adding to labor burden (increasing total labor costs, and can be allocated to all jobs in that time frame), not job specific. The Job Time is the Job Time, from being on site. (Example: check out the 2019 HGTV Dream Home.)

Or,

We are a Plumbing, HVAC entity. We have a lot of Emergency Call outs, so the Job is the reason for the OT. All Jobs down for call out are also charged OT price to the customer, or, "Emergency call out rate is different than if we were scheduled to show on Monday during regular business hours."

Hope that helps.