TUC leader Frances O'Grady has urged Labour to pull together after its leadership election and get "stuck in" to opposing the Government on behalf of millions of workers.
Speaking at the TUC Congress in Brighton, she warned that a political party has to be more than a "fan club" and should reach out beyond its own ranks.
Labour's purpose is clear - to deliver wealth and opportunity to the many and not the few, but that means winning a general election to deliver it.
On behalf of working people, my message to Labour is this - look sharp, pull together and do what working people are crying out for Her Majesty's Opposition to do - get stuck in and oppose.
Show the grit, discipline and determination needed to win back economic trust, win back political power and change Britain for the better.
It hasn't started well for Jeremy Corbyn, writes Carl Dinnen - but he has the advantage of expectations starting off extremely low.
Newly-elected Labour leader Jeremy Corbyn has finalised his shadow cabinet - so who has made the cut?
Shadow Business Secretary Chuka Umunna has left the Shadow Cabinet by mutual agreement, the MP has confirmed.