Equity theory, most popularly known as equity theory of motivation, was first developed by John Stacey Adams, a workplace and behavioral psychologist, in 1963.
On average there are about 4.3 weeks in a month. Each week is 7 days, and there are normally either 30 or 31 days in a month, so there are usually between 4.2 and 4.4 weeks per month. The exception is February because it has fewer days, so there are about 4 weeks in that month. On average there are about 4.3 weeks in a month.
Since a year contains exactly 12 months, that means that if you define your quarters in terms of months everything adds up. But if you define your quarter in terms of weeks there's a problemâ13 x 7 x 4 = 364 and a calendar year contains 365 (or sometimes 366) days. Consequently, a firm that defines its quarters in terms of weeks needs to hold a 14-week quarter every four or five years.