UK strikes
Tory pressure is mounting on the prime minister as the winter of discontent continues.
Former party chairman Jake Berry has called on ministers to come up with more cash to end the strikes.
The Labour and Tory leaders clashed angrily in the final PMQs of the year.
Did the RMT Union’s general-secretary deliver "low blows" or a "brilliant" takedown of the BBC?
The government says it would cost £28 billion to increase striking public workers' wages.
"Ministers are more interested in playing political football with disputes than resolving them".
See how salaries in the public sector have changed over the last 12 years.
The move comes as ministers hold an emergency Cobra meeting on the wave of industrial action.
Jon Kay also pointed out some of the health secretary's numbers were "questioned".
Union bosses admit they are "co-ordinating" industrial action for maximum impact.