Final answer:
d. When a client has contract labor, it is important for them to pay the laborers on time, provide necessary safety equipment, and comply with labor laws.
Step-by-step explanation:
When a client has contract labor, it is important to remind them to do all of the above: A) Pay the laborers on time, B) Provide necessary safety equipment, and C) Comply with labor laws.
By doing so, the client will ensure that they are meeting their obligations and responsibilities towards the contract laborers, while also maintaining a safe and legal work environment.