Processing Waste of Electrical and Electronic Equipment (WEEE) causes serious environmental problems, especially when WEEE is processed in uncontrolled conditions. WEEE recycling under controlled conditions consists of the following major steps: disassembly, upgrading and refinement. Disassembly is usually done manually, and, at this stage, certain components (cases, external cables, cathode ray tubes [CRTs], printed circuit boards [PCBs], batteries etc.) are separated. This activity releases coarse and fine particles, which may also contain additional noxious substances, into the atmosphere. The current study determines the concentration of indoor PM10 in a Greek plant for the dismantling and temporary storage of WEEE, based on a short-term sampling campaign. Elemental concentrations in the PM10 have also been determined. Results show that the indoor PM10 concentration in the disassembly area did not exceed the time-weighted average (TWA) for total particles set by Greek legislation or the 8-h TWA for total particles set by the Occupational Safety and Health Administration (OSHA). Nevertheless, these concentrations were higher than those measured in the ambient air of Greek cities. Regarding the measured elements, Zn, As, Br, Pb and Cd were quite enriched in PM10, indicating significant indoor sources. Factor analysis of elements of possible anthropogenic origin showed a clear distinction between cathode ray tubes (CRT) and other possible sources. Finally, the risk assessment for metals of toxicological concern showed a non-negligible lifetime risk for 8-h workers. This is the first report of WEEE indoor air pollution in Greece and its associated origins and effects.