Ambulance workers will walk-out later today in the latest strike in the long running row over shifts and working hours.
Unite members at the Yorkshire Ambulance Trust plan to strike from 3pm this afternoon until 7am tomorrow morning.
The union claims proposed longer shift patterns could lead to staff working for up to 10 hours without a meal break and could affect patient safety.
The Tust said it would take steps to "maintain operational cover".
Ian Brandwood, Executive Director of HR at the Trust, said: "We are very disappointed that Unite the Union has decided to go ahead with strike action this weekend despite recent constructive talks with senior representatives at the union."
Care workers in Doncaster will go on strike today for another 7 days after a breakdown in talks between UNISON, ACAS ( the Government Arbitration and Conciliation Service) and Care UK.
Around 150 UNISON members will take further 7 day strike action over Care UK's threat to slash their pay and conditions. The strike will start from 7 a.m.
UNISON Regional Organiser Jim Bell said: "We are bitterly disappointed that talks to resolve this strike in a fair and sensible way have been thwarted by Care UK who are still proposing to cut take home pay by up to 50 per cent."
Five hundred ambulance workers have joined picket lines across Yorkshire and North Lincolnshire for a 12 hour walk out.
Members of the Unite Union are taking action because they say the Yorkshire Ambulance Service NHS Trust are risking patient safety, by allowing new emergency care assistants to work with paramedics after only six weeks training.
Over the next five years the trust has to cut their budget by forty six million pounds. They say they'd like to reassure the public that the level of disruption will be minimal during industrial action.
Staff who work for the Driver and Vehicle Licensing Agency (DVLA) are walking out across our region today.
It is in protests to threats to close 39 offices. 1,200 people who work in the DVLA's local and enforcement offices will go on strike for two hours. It is part of action across the Department for Transport, who are taking industrial action against cuts to pensions, jobs and pay.
Unions claims the DVLA closures will put jobs at risk, but also put an end to face-to-face services the offices provide, which cannot be dealt with online or by telephone.
With unemployment high and our communities suffering as a result of the government's cuts, ministers should be providing all the help they can to local economies that are crying out for support and investment.
Instead they're ploughing on with entirely unnecessary and unpopular cuts to vital transport services. These strikes across the whole range of transport services form a major part of our ongoing fight against cuts to pensions, jobs and pay.