The only thing worse than hearing about impending bad news is hearing about it after it s too late to do anything about it. Again, it comes down to trust, and trust only comes from communication. On the other hand, if the issue behind the over-involvement presents an immediate threat to the project, you should check your mitigation plan. Meetings are called to evaluate the impact or to figure out how to handle the situation. It takes a long time to recover from the interruptions.
People get colds, vendors lose orders, and shipments get misplaced.
Failing to plan for contingencies and exigencies is not optimism, it is denial. You do not need to count on bad things happening, just be prepared for them. To build the plan, ask the team, the stakeholders and yourself what might go wrong at each stage of the project. For each possibility, ask yourself about the impact of the event and the likelihood of the event actually occurring. Label the likelihood and impact high, medium or low, with the definition of each level being specific to an organization and even a project.