Sure.
From a challenge perspective, it would potentially be how heavy the bureaucracy would be if, let's say, the Privacy Commissioner would require a specific, full-fledged PIA for an investigation. Departments are expected to have some degree of control within what's called the personal information bank. Within a workplace environment, you're expected to have some data that is shared with your employer. Most of the investigations would fall within what's accepted within a personal information bank. If anything goes beyond that mandate and scope, that's where a PIA would be required. A PIA should be very specific, and usually departments are well within the security protocol to work and support these operations.