Should you be leaving campus for an extended period (e.g. sabbatical, education leave, long term illness, etc.), during which time you will not be utilizing your office space, it is critical to make arrangements with your Chair/Director/Dean, relative to the space and your belongings, in advance of your departure.
Since a faculty member with supervisory responsibilities related to a lab is subject to both internal policy and external legislation (e.g. research protocols, health and safety legislation, etc.), it is imperative that, prior to any extended absence during which they cannot supervise the lab, they discuss matters of lab supervision with the appropriate supervisor and make documented arrangements for such matters.
For more details see: Office/Lab Arrangements During Leave (doc)