My primary "hack"
While I use GTD-style contexts per the "GTD Outlook Setup Guide" in my home system, I find this is less useful at work since I am essentially always in a single "context," or can be at a moment's notice if needed. As of late I've found it much more useful and intuitive to group my work tasks by urgency as recommended by Michael Linenberger in his 1MTD and MYN systems.
1MTD vs. MYN
Completely compatible with a GTD-style workflow, the MYN system basically makes up my Next Action lists, with urgency zones rather than contexts.