In most cases, a grievance must be filed within 30 school days from the time you have knowledge of the act or condition that violates the contract. However, in certain types of grievances, the time limits are shorter. For example, all reorganization grievances must be filed within two school [work] days of your knowledge of or receipt of your assignment. Most per session grievances must also be filed within two school days. Grievances involving salary issues can be filed within three months of knowledge of the salary problem.