Perks, of course, are perquisites: the lush-life benefits--company cars, club memberships, a corner office--that employers offer valued hirelings in addition to regular pay-checks. Baehler, however, never decides whether his survey is to be a handbook for executive hustlers with out-of-sight tastes or a tactical manual for upwardly-mobile managers working within the system. On the one hand, he offers sleazy counsel on expense-account chiseling (booking night flights, snagging blank restaurant receipts, etc.); on the other, he provides straightforward rundowns on deferred compensation, paid-up annuities, relocation allowances, stock options, and related emoluments--plus data on salary scales (which pace perks) in various fields. Best bets for those on the make, says Baehler, are ad agencies, broadcasters, movie studios, securities brokers, non-profit organizations, and public development authorities. (Among the skinflints: publishers, railroads, building contractors, and ""any company associated with the automotive or steel industries."") For main-chance gamesmen just getting into the swing.