Regular USCIS processing runs on published queues that vary by service centre and change over time; premium processing compresses the adjudication to a defined short period. Neither timeline includes the weeks needed to assemble evidence, which is usually the longer part.
Plan from the evidence date backwards, not from the filing date forwards
The sequence people forget is that the qualifying year has to be complete before the petition is filed, so an employee who was hired eleven months ago cannot be transferred next month regardless of urgency. Once the year is complete, the schedule has three segments: document assembly, adjudication, and consular or admission steps. Assembly is under the company's control and typically takes several weeks when two sets of corporate records are involved. Adjudication depends on the queue and on whether premium processing is used. For a Canadian citizen there is no visa stamp required, so admission follows the approval directly, which removes one common delay. Build in time for a request for evidence, which is a normal event rather than a disaster, and do not schedule a family move until an approval exists.
Hypothetical example: a medical-device distribution manager has completed foreign service but the American branch lease is unfinished. The review should decide whether eligibility and business-readiness evidence will mature together, using foreign employment timeline, premises evidence, corporate records, and petition calendar. Work backward from the controlling evidence, then allow time for correction, adjudication, and any admission or consular step. Keep a written chronology of commitments and permissions. The planning failure is that a launch date cannot cure a missing qualifying employment period. Do not let a commercial schedule outrun the immigration record.