The economic growth post 1945 had very little to do with
the after effects of the war. The two main drivers were the
recognition by politicians throughout Western Europe and
the North American continent that the way the economies
had been managed prior to WW2 had been wrong; and
fairly full employment.

While it is true that for a time wages on the railways fell
behind those in other industries, railway workers did not
have zero hours contracts imposed on them. They were
not forced to go self-employed. They were not denied sick
pay and pension rights.

There is no comparison at all between the employment
situation of railway workers in the 1950s and people
working zero house contracts or similar today.