// THIS DOES MUTATE THE STATE
            const assignments = {
                ...state.assignments
            };

            _.forEach(assignments, (assignment, eventFunctionId) => {
                if (assignment.hasOwnProperty(action.employeeId)) {

                    if (_.includes(['applied', 'applied_provisional'], assignment[action.employeeId].status)) {
                        assignments[eventFunctionId][action.employeeId].status = 'denied';
                    }
                }
            });

            return {
                ...state,
                assignments: assignments
            }

            // WHILE THIS DOES NOT
            let newState = {
                ...state
            };

            _.forEach(state.assignments, (assignment, eventFunctionId) => {
                if (assignment.hasOwnProperty(action.employeeId)) {

                    if (_.includes(['applied', 'applied_provisional'], assignment[action.employeeId].status)) {

                        newState = {
                            ...newState,
                            assignments: {
                                ...newState.assignments,
                                [eventFunctionId]: {
                                    ...newState.assignments[eventFunctionId],
                                    [action.employeeId]: {
                                        ...newState.assignments[eventFunctionId][action.employeeId],
                                        status: 'denied'
                                    }
                                },
                            }
                        };
                    }
                }
            });

            return newState;