Lesley Titcomb is requesting new powers to stop final-salary pension schemes being dumped when companies are sold.
Currently, companies do not have to inform the regulator before a sale, but the regulator would like firms with large pension deficits to be required to inform her if a sale is imminent and powers to intervene if necessary.
The recent collapse of BHS, which entered administration when former owner Sir Philip Green sold the company for £1, has highlighted the problems of final-salary or defined-benefit schemes when a company is sold.