EastEnders was thrown into chaos yesterday as camera and sound crew went on strike.
Nine staff walked out for three hours, forcing the BBC to use freelancers to ensure filming went ahead.
Workers protested at having allowances for travelling between BBC Television Centre in London and Elstree Studios, Herts, cancelled, costing them between £5,000 and £10,000 a year each.
They were already upset over working conditions.
Union Bectu has organised more strikes for this month, although an EastEnders spokeswoman insisted they would not halt production.
The BBC said: “We cannot afford to reimburse travel-towork claims at a time where other colleagues are losing their jobs.”