Attention government employees - who knows about the step increase rule?

Question

Specifically, at what point do you have to wait more than just the one year before you get an increase? In other words: Say you are a grade 13 step one. In one year you go to step two, one year later step three, etc... BUT...at one point (either step 4 or step 5) you have to wait 2 or 3 years and I'm not sure which step it is. Thanks to whoever can help me.

Answer 1

It starts at Step 4

http://www.opm.gov/oca/pay/html/wgifact.asp