"Generally speaking, there are two categories of problems that can't be solved by training. In my experience, any issue can be categorized under these two. The first one is a people issue. Examples of people issues are lack of motivation, the absence of skill or ability, and conflict between employees. For instance, when employees demonstrate low morale or lack of motivation, they could be suffering from personal issues, or it could be because they feel under-compensated. Coaching and counseling by their immediate superior may bring underlying concerns to light, but not training. From there, the appropriate solution may be identified.
The second category would be the workplace environment. These are issues around tangible or practical factors such as the workers' tools, the processes they follow, or their resources. For example, if you have ten office workers and only eight computers are available, you can expect low productivity. No matter how efficiently you train them to use their computer time wisely, the productivity they could achieve if they all had their own computer is above and beyond what they could achieve at status quo."