(Reuters) – The U.S. government shutdown, which entered its third day on Thursday, is beginning to hit the factory floor as concerns grow about the economic consequences of a prolonged stalemate in Congress.

The standoff, prompted by Republicans’ determination to halt President Barack Obama’s healthcare reforms, could affect U.S. companies that rely on federal employees and funding.

Following is a list of companies and financial institutions that have warned of project delays, employee furloughs and other consequences of a prolonged budget impasse:

** BOEING CO

The aerospace and defense company said there could be delays in its jetliner deliveries, including its new 787 Dreamliner, because thousands of U.S. aviation officials needed to certify the planes have been idled. The delays would also affect numerous programs and products in the company’s defense business.

** UNITED TECHNOLOGIES CORP

The company, which makes Sikorsky helicopters and other items for the military, said it would be forced to furlough as many as 4,000 employees if the U.S. government shutdown continues through next week, due to the absence of government quality inspectors. More than 5,000 employees may be on furlough if the shutdown continues into next month.

** USEC INC

The uranium fuel supplier, which is awaiting funds from the U.S. government for an enrichment project, said it may have to furlough some workers or slow down work at the project if the shutdown extends past Oct. 15.

** GOLDMAN SACHS

** BANK OF AMERICA

** CITIGROUP

** JPMORGAN CHASE & CO

** AIG

** MORGAN STANLEY

** WELLS FARGO

Chief executives from major financial institutions have warned of “adverse” consequences if government agencies remain closed and lawmakers fail to raise the debt ceiling by mid-October. In a meeting with Obama on Wednesday, Goldman Sachs Chief Executive Lloyd Blankfein implicitly criticized Republicans for using their opposition to the healthcare law as a weapon that could lead to a U.S. default.

SOURCE REUTERS