Immigration Lawyer Pompano Beach

Yes you can have concurrent employers under H-1b.

Yes, you may have concurrent H-1B's. If your hours with Company A will change or were not a range then you may need an amendment of that Petition as well.

Yes, multiple H1bs are fine. You can also process the green card simultaneously.

Yes, you are allowed to have multiple H visa petitioners. Please note, you need to physically be able to work the hours required.

I am not sure what you are requesting. You cannot have two H-1B visas for the same duration. You can have multiple H-1B visas so long as the period of validity is different. For example, you could have received an H1-B visa from company A. You could then go to work for company B by either changing your sponsor (if company A's H-1B was still valid) or filing for a new H-1B for a period after the expiration of company A's H1-B visa.

You can work for multiple employers concurrently if each employment is approved by a separate visa petition.

Yes, you can have multiple visas with 2 companies if you are working for Company A and will be working for Company B also. Yes, you can start processing Green Card with Company B.

Yes. You can hold multiple part time H-1B visas, but you must submit separate petitions for each visa and have two separate I-94 cards for each employer. Additionally, the employer will have to complete and file a labor condition application with the Department of Labor attesting to the wage that the employer will pay you. If the wage guarantees full time employment on a salary basis, then you would be limited to one H-1B. If, however, the employer guarantees the wage on an hourly part time basis, then you would be okay in obtaining two separate part-time H-1B petitions.

You cannot have two H1b visas. However, H1b's are portable in most cases. You can transfer your H1b from company A to company B.

You can only have one status in the US with one sponsor(H-1 for one company or one school if F-1). You may have more than one H-1 approval without the status. Then you can choose which H-1 you would like to get visa and return to the US. In other word, you cannot have two valid I-94s. You do not need to have an H1 with any company before you start the green card application process. You may work for one company under H1 and have another company file your green card(PERM first, then I-140).