If the span of management is wide, levels are needed, and the organization is if the span of management is narrow, levels are needed, and the resulting organization is

If the span of management is wide, Fewer levels are needed, and the organization is Flat. If the span of management is narrow, More levels are needed, and the resulting organization is Tall.

Explanation:

Span of control is the number of personals working under a single Designation.

If their are greater number of employees working under a single designation then the hierarchy chart is wider in length, that's the reason we also say that the organization is flat. Due to these increased number of employees working under single designation, there is lower number of levels in such organization. It is also one of the main reason the employees turnover is very high because there are fewer chances of promotion in flat organizations. The number of candidates for the promotion are higher in the organization.

On the other hand, if their are lower number of employees working under a single designation then the hierarchy chart is taller in length, that's the reason we also say that the organization is flat. Due to these lower number of employees working under single designation, there is higher number of levels required in such organizations. It is also one of the main reason the employees turnover is very low because there are higher chances of promotion in tall organizations. The number of candidates for the promotion are fewer in the organization.