That's a generalization, and may be accurate for your area or the business you know. Many do have stronger rules in place about returning to work. I think some of it depends largely on the risk of potentially infecting others, which does no good to have 1 employee back after 5 days if it means 2 others then become ill and have to be out 5 days each. As it pertains to onboard... onboard has always been super-cautious about highly contagious illness -- norovirus was the "usual" expected culprit before covid. There is no value for a CM to return to their position if potentially infectious. Last I knew
DCL was extra-cautious and the CMs had at least a 10-day quarantine regardless of how ill (or mild symptoms). The ship can't function with too many CMs ill, therefore a few extra days in quarantine to avoid spread is probably preferable than "CDC minimum recommendation."