​What weaknesses can affect work performance?

Every job requires a specific skill set, so the ability to do the job effectively requires the person doing that job possess that skill set.  However, in most cases, that’s a simple matter of directed training so the person is able to perform the basic requirements of the job and then, through doing the job, get progressively better at performing it.  The real weaknesses that impact work performance lie in 3 areas, all of them based on the ability to appropriately interact with others on the team.  They are effective communications, the ability to engage in constructive conflict and learning how to care about, not just do, the job.  Overcoming these weaknesses determines the ability to successfully perform the job.