Back in the day I used to work as a subcontractor. It's a tricky because your future is dependent on the main contractor. If the main contractor plays games like slow payment you’re in a bit of a bind. You’re owed money so it's difficult to jump ship etc. Ask any builder who is a subcontractor, as the building business can be particularly tough.
Anyway this contractor had a terrible habit of promising extra. The agreement would just about be complete and a promise would be made (for no reason).
Maybe from a building perspective it might be the equivalent of “I’ll send you some flyover pictures of the property”. Now the customer thinks this is great and he’s looking forward to receiving the pictures. But then the contractor gets busy with other stuff and the flyover pictures never materialise.
The customer is unhappy as a promise was broken. So everyone loses.
The unfortunate thing was that the “flyover pictures” were not originally part of the agreement. When the contractor mentioned the “flyover pictures” he sets an expectation in the customer's mind. But if he had never mentioned the flyover pictures, then that expectation would not have been set.
There's an old saying “loose lips sink ships”. Think of all the expectations that you set. “I’ll be there in an hour” when you’re two hours away.
I’ll get back to you by 2pm today” (when you’ve no intention of).
In my experience people in organisations set so many expectations unnecessarirly. If you’d like to reel in your organisational expectations, then this course is a cracker.
Managing Expectations https://www.preftrain.com.au/uploads/pdf/Managing_Expectations_Preftrain.pdf