This isn't the way constructions projects work. Trump doesn't decide if contractors get paid or not, the general contractor pays the subcontractors (which is what these companies are) and the architect pays the general. None of these companies that are filing liens had a contract with Trump.
Generally in order to turn the building over to the owner after the project is finished the contractor is required to provide lien releases from itself and its subs. Contractors sign lien releases when they complete all contractual requirements and receive final payment. It appears that the building has been turned over to Trump so it's rather odd that the general wasn't required to turn over all of the lien releases but on a project that large there can be subs working for subs working for subs and often the general contractor isn't aware that their sub hired another sub to do some or all of the work.
Just to be very clear, Trump doesn't owe these companies any money. The contractor those companies had contracts with are the ones that owe them money, be it the general contractor or one of the GCs subcontractors and filing a lien against the building is the first step in recovering their money. Even material suppliers can file a lien if they aren't paid by a subcontractor, on some projects we have to get lien releases from all of our suppliers down to the guys we buy screws from. As a matter of fact, I would be very surprised if Trump or whatever entity actually owns the building doesn't sue the architect and general contractor (or construction management company) as it's their contractual requirement to ensure that everyone gets paid.
Found this in the article:
An attorney for A&D Construction, Richard M. Sissman, said the firm was a Hispanic-owned construction company that had no contract or relationship with the Trump Organization directly but rather with another contractor on the project. “We did not contract directly with Trump,” Sissman said.
I do find it odd that one contractor says he is owed almost 3 million. You don't get a contract, do all of the work and then get your entire contract amount in one lump sum. You get monthly payments as you do the work, so if 20% of your contract is done you bill and get paid for 20%, minus either a 5% or 10% retainage which is held until the scope of your contract is substantially complete. Usually if the contractor gets very behind on your payments you stop work long before they owe you a huge sum of money but maybe this was a very large contract and $3M was their final payment and/or retainage.
Disclaimer: Not a Trump supporter.