Consider the following statement

Albert is a removal van Driver. One lunchtime, while on a job, he stops off at the 'Dog and Duck' for a quick pint of beer. He drinks rather more than he had intended and, that afternoon, he drives the van into a lamppost. The furniture he is transporting is wrecked. He is sacked from his job as soon as he tells his boss what happened.

What areas of law are involved?