Three more former members of the Brooklyn DA’s office have been slapped with fines for doing political work on government time during the campaign of then-DA Charles Hynes in 2013.

The decision by the Conflicts of Interest Board came a couple of months after the board handed down a $40,000 fine against Hynes for illegally using his office as the top prosecutor in Kings County as an extension of his re-election campaign.

The COIB on Monday fined three former DA’s office employees — a community liaison, a deputy district attorney and an assistant district attorney — a total of $5,600 for using government time or resources to aid Hynes.

The community liaison, Henna White, was hit with the largest fine — $4,000 — for using her official email to organize campaign events, connect Hynes with supporters to host fundraisers and get-out-the-vote events and to prep the then-DA for his appearances at fundraisers.

The deputy district attorney, Michael Vecchione, agreed to pay a $1,000 fine for using his government email and computer to prep Hynes for a televised debate while he was on the government clock.

And Assistant DA Mary Hughes admitted to answering campaign emails on government time, costing her $600.

So far, the COIB has brought fines against Hynes and seven aides for their actions during his bitter and hotly contested loss to Kenneth Thompson, who died from cancer in 2016.