Despite a conducive environment airline strike insurance did not signi
ficantly affect flight attendants' and mechanics' earnings and depress
ed pilots' earnings by a barely statistically significant 3 percent. T
hese results cast doubt on previous assertions that the demise of stri
ke insurance, precipitated by the 1978 Airline Deregulation Act, impro
ved unions' relative bargaining power Furthermore, the ineffectiveness
of one of the most promising strike insurance pacts could explain the
small number of such agreements in U.S. industries.