I get one question asked of me all the time. How many projects can a Project Manager handle at the same time? While the obvious answer is ‘it depends,’ it does not satisfy somebody looking for a specific number. Therefore here is my heart felt answer. From my own experience the magic number for simultaneous and effective management of full-time projects is two. By full-time projects I mean the projects where you are the only project manager in charge of the whole project including scope, schedule and resourcing.
The reason is when you switch between 2 projects at regular intervals (say every 4 hours) it keeps you energized and motivated as the ‘boredom’ of one long project does not set in. Invariably PMs do get time of ‘low activity” on every project which is also the time to pick up on other project and make progress there. An example of low activity time is waiting for lab test results to arrive before PCB could be laid out etc.