Timesheet disagreement with client - legal situation?

[Wanderer]

At the moment, client is refusing to authorise the time for that day. Not cool. With no signed timesheet where do I stand? Only talking about 1/2 days pay here but still its taking the piss.

It's the principle, right enough. I'd just send the invoice to the agency along with the request that the client asked you to work 1.5 days that day and you did in fact work 1.5 days so you are now billing for 1.5 days but the client refuses to sign that off. Leave it for the agency to fight it out with the client.

It's a bit of a tulipty trick on the client's part though.