Final answer:
D) Approval from the Department of Labor
Approval from the Department of Labor is not a required condition for a legal walkout by construction workers; other conditions, such as unsafe work conditions and good faith efforts to resolve the issue, must be met.
Step-by-step explanation:
In the context of a legal walkout by construction workers, the condition that does NOT need to be satisfied is D) Approval from the Department of Labor.
Conditions A) Unsafe scaffolding conditions, B) Good faith effort to resolve the issue with the employer, and C) Exhaustion of other remedies are typically necessary prerequisites for a walkout to be considered legal.
However, obtaining approval from the Department of Labor is not a typical requirement for the legality of a walkout. In general, workers must address safety concerns with their employer and attempt other resolutions before walking out, but direct approval from the Department is not a standard stipulation for these actions.