Struggling Telstra subsidiary Sensis will make up to 120 staff redundant nationally following a disastrous profit result on Monday that has left the directories business reeling.

Crikey can reveal the company, which is yet to formally announce or tell staff of the layoffs, will offer some redeployment within Telstra. But many will go from a hit list of 30-40 employees in face-to-face sales, with the remaining layoffs to be drawn from administration, marketing, HR and finance offices in Melbourne and Sydney.