If he is an actual "Licensed" broker then he is also Bonded. You should also have a copy of his "Bond" in your file. He is required to send you that Bond along with the signed contract by both parties.
If you have a "signed contract" with said Broker that details agreed upon payment arrangements (15-30-60 days??) and do have copies of all invoices submitted to Broker for payment and broker has not paid in agreed upon time, then file it against his bond for payment. Independent Owner/Operators in all areas of trucking have to do this day in/day out at times.
There's an article (how to guide) somewhere on OOIDA's website that covers this extensively. My advice, of which I feel I am entitled to give on this subject matter (not naming names
), start the process of filing against his bond as quick as you can. This could be a sign that you may be one of many he has not paid yet either and how many of those others he hasn't paid yet are filing against his bond already???
Trust me, if he's just a little behind right now and is in the process of getting everyone caught up, one claim against his bond will put you in the front of the line when it comes to paying Drivers in the future. That is
if you do anymore work for him in the future.