Several well-known Melbourne pubs have turned off their Carlton Draught and VB taps and removed many other popular beers from sale, as conflict continues to plague Australia's biggest brewer.

A union-led boycott fighting for the reinstatement of 55 laid-off fitters and electricians at Carlton & United Breweries in Abbotsford this week passed the 100-day mark.

Trade unions have been urging drinkers to ditch some of CUB's best-selling beers – including VB, Carlton, Melbourne Bitter, Pure Blonde and Fat Yak – ever since the company axed a maintenance contract that put dozens of long-serving workers out of a job unless they agreed to take a large pay cut.

A number of pubs in Victoria and interstate have now leapt on board the boycott, removing CUB products from sale.