There's one unnamed source.
No one is asked to comment, either from the opposition or trade unions, or employment law or policy experts.
(The claim about on-call work is confused but has a kernel of truth).
As @jdportes points out they seem to have made up a statistic about family savings. This is an identical MO to GOP claims about tax bill savings in the USA.
*Boris and David Davis wave*
Rather it seems this is simply the "Big Lie" technique - it worked for Brexit and Trump, so why stop now?
As I say in the post: "Some journalists aim to speak truth to power; others are content to help it mislead". //