Calvin Brandford (center) is a certified minority contractor who has run an excavation business north of Boston for almost 30 years. Brandford said getting state-funded work as a subcontractor is very hard and often comes with a serious drawback: not getting paid for 60 to 90 days.

Calvin Brandford (center) is a certified minority contractor who has run an excavation business north of Boston for almost 30 years. Brandford said getting state-funded work as a subcontractor is very hard and often comes with a serious drawback: not getting paid for 60 to 90 days.