A project extension does not itself extend immigration authorization. Compare the changed assignment with the status and employment permission actually held, and obtain review of any necessary immigration steps before relying on the new schedule. The answer depends on the facts and the applicable procedure.
Review changes before the old timeline expires
Ask the employer to discuss likely delays early enough to evaluate options. Track the contract end, authorized stay and any relevant filing milestones separately. If responsibilities or the employer change, the issue may involve more than additional time on the same project.
This overview does not determine whether any specific pending filing permits continued work. Do not infer that permission from a signed contract amendment or from a colleague’s experience; confirm your own basis before continuing the assignment. Review any change well before the existing timeline expires, because the options available in advance are wider than those available afterwards.
Where a project is extended, that is a change in the facts underlying the current authorization rather than an automatic continuation, and the appropriate step depends on the classification, its expiry and the nature of the change. Agree with the employer that a proposed extension will be raised as soon as it is contemplated rather than when it is decided, since project extensions are usually discussed for some time before they are confirmed. Continuing to work past the period authorized is not an option, so the practical requirement is to know the expiry date, to have a date well before it at which the position is reviewed, and to hold the employer to that review.