If public sector workers are given a bigger pay rise than the 1% promised by the Government, it will lead to "debts ever larger for our children and our grandchildren to have to pay off", a senior minister said.
Francis Maude told Good Morning Britain "pay restraint is essential" if the UK ever wants to get its deficit down.
Union leaders said they were "overwhelmed" by support after a strike by public sector workers caused widespread disruption.
David Cameron, Michael Gove and other Government figures depicted in a variety of unflattering manners by striking public sector workers.
Hundreds of schools are to close tomorrow as teachers join strike action. Find out what schools in your area are affected.