with work scheduled without concurrency.
When is the first work product received? If I get the sniffles at the end of the second week, what do you have to show for my labor?
Which schedule is the lowest risk?
Multitasking is often a poor business decision. It is inherently inefficient and defers realizing the benefit from work performed while increasing risk, often with little or no benefit. If this argument can help reduce the amount of multitasking your managers request, that would be great. If it can't help you with your managers in the short term, I hope that, when you are in a position to influence how tasks are assigned, you might be encouraged to resist the temptation to multitask except where someone can make a compelling business case in favor of it.