Fwd: Trigger on VIEW not firing

CREATE VIEW worksub AS SELECT FROM work WHERE worktype='subordinate';


CREATE OR REPLACE FUNCTION wrk_view() RETURNS TRIGGER AS $wrk_tg$
    BEGIN
        RAISE NOTICE 'UPDATE VIEW FROM: % OPERATION: %',TG_TABLE_NAME, TG_OP;
    END;
$wrk_tg$ LANGUAGE plpgsql;

CREATE TRIGGER wrk_tg INSTEAD OF INSERT OR DELETE OR UPDATE ON worksub
    FOR EACH ROW EXECUTE PROCEDURE wrk_view();