There are four common pillars applicable in host EU* member states where your employees are working:
PILLAR 1: Working Conditions
Employers must provide employment conditions at least equal to the minimum level provided for by the law in the host country where posted workers are temporarily working. This relates to conditions such as minimum wage, working hours, and scheduled breaks.
Posted Worker webinar: https://info.newlandchase.com/on-demand-webinar-posted-worker-rules-simplified