About making a contract where you get paid 'first' even if the money goes to the 'bigger company' in transaction

What is the clause in legality, where if you make a deal with someone, you get paid 'first' as in before they can pay debt, workers, etc... They must pay you, before those fee's and you must and will get paid before they do anything else(as you have deals you made to incur that deal, etc..)