Technically the L1 visa does not in itself lead to an employment based immigrant visa (frequently referred to as a “Green Card”).  The good news is that the requirements for an L1A visa as a manager or executive are similar in many ways to the EB1C multinational manager or executive employment based immigrant visa.  Therefore, if you are in the US on an L1A visa you may find it easier to qualify for an EB1C immigrant visa.  One benefit of the EB1C visa is that there is no Labor Certification requirement and the process is relatively fast.  To apply for a Green Card under this category the office in the US must have been trading for at least one year.