Trust me, claimants need to say why their employment ended. Even if you say the contract ended, a check with the former employer can be made. If you've been sacked, the employer will always be contacted and THEY have to show there was misconduct. If you leave voluntarily, YOU need to show there was a good reason. If misconduct is proven or there is not a good reason for leaving, the JSA will be sanctioned (not paid) for thirteen weeks but any days between the employment's ending and the claim starting will be deducted from that sanction period.