(if working on construction related fields)
(OHS) white card (a must!)
Police Clearance Certificate (a must!)
Alcohol and Drug Test (essential)
Full Drivers License (essential)
Tickets - ie. Forklift, Scissor-lift, etc. (favorable, unless a requirement)
Certificates - ie. CAD, Civil3D, Terramodel, BIM, etc. (favorable, unless a requirement)
baka may nakalimutan pa ako. maybe the others have more suggestions.