How to get observation hours?

Hello, I am trying to get observation hours in different facilities, however, I work M-F during usual business hours. I have volunteered/interned with an OT but I have no proof of the hours because of the lost paperwork. I have a few hours (less than 40) that are documented. NYIT requires 100 documented hours, Kean is 40,etc. Is there anything anyone recommends? I can't really quit my job to volunteer or observe...
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Source Type: forums