Enough to verify the meaningful distinctions and their support, without turning the process into an exhaustive ranking of the workforce. The necessary preparation depends on how well the employer already documents training and project responsibility.
Set a verification checkpoint
Have the responsible manager approve the factual comparison before it is used in the petition. Resolve conflicts with existing job descriptions or prior statements rather than leaving them for adjudication. Then coordinate the filing and travel route.
A polished comparison can clarify the case, but it cannot guarantee a decision date or compensate for missing qualifying employment. Set a checkpoint and let the family plan against it. Comparison work expands without a stopping rule, and a household waiting for a departure date experiences that expansion as uncertainty rather than as diligence.
Decide in advance how much verification is enough, meaning the meaningful distinctions confirmed and supported without an exhaustive ranking of the workforce. Have the responsible manager approve the factual comparison before it is used, and resolve any conflict with existing job descriptions or prior statements at that point rather than leaving it for adjudication. Then coordinate the filing and travel route.
A polished comparison cannot guarantee a decision date or supply missing qualifying employment.