T&A system for Navision?

We run our accounts and manufacturing ERP system through Navision and we currently capture labour costs for jobs by a lengthy manual process. We are now looking at automating this through a T&A system that can integrate with Navision. This system is expected to add other benefits such productivity efficiency reporting and collating attendence records etc. We are struggling to find an existing bolt-on for Navision that can provide this - can anyone suggest anything?

Many thanks

Steve