Which terms and conditions apply to posted workers?

The correct answer highlights that posted workers are primarily governed by the labor laws of the host country while retaining certain protections from their home country. When workers are posted to a different country for a limited duration, they generally enjoy the working conditions that are stipulated by the host country's regulations. This includes terms surrounding pay, working hours, holidays, and safety standards that the host country enforces.

This principle is essential to ensure that posted workers are not exploited and are provided with reasonable working conditions that align with the local legal framework. While their home country's laws may have implications, particularly in relation to employment contracts or certain rights, the dominant rules in this context are those of the host country, where the work is being performed.

The other options suggest different frameworks that may not fully apply to posted workers. Home country employment terms alone would not account for local working conditions and rights in the host country. Global standards for worker safety and only international labor guidelines may provide a level of baseline protection, but they do not specifically address the comprehensive terms and conditions that apply directly in the context of a local employment scenario. Thus, the host country's regulations take precedence in this situation.