Is tipping required?

While it is human nature to want to reward a job well done, tipping is not allowed under union guidelines.
 
If laborers accept monetary tips, they may be subject to suspension if their supervisor finds out.
 
The best reward for laborers - one that doesn't jeopardize their jobs - is to pass along a verbal or written compliment regarding their work to show management, the service provider, or the installation-and-dismantle house.