Is there anything that prohibits a bank from providing loans at better rates and/or terms when loaning to employees, other than officers, directors, insiders? I thought I read somewhere that it was OK to give employees better terms but that it had to be a program availble to all employess.

Reg. O speaks only to executive officers, directors, etc. You're fine to over better rates and/or terms to employees.

If it's available to all employees, it can be available to executive officers also.