What's the noun for sackings? Here's the word you're looking for.
sack
A bag; especially a large bag of strong, coarse material for storage and handling of various commodities, such as potatoes, coal, coffee; or, a bag with handles used at a supermarket, a grocery sack; or, a small bag for small items, a satchel.
The amount a sack holds; also, an archaic or historical measure of varying capacity, depending on commodity type and according to local usage; an old English measure of weight, usually of wool, equal to 13 stone (182 pounds), or in other sources, 26 stone (364 pounds).
(uncountable) The plunder and pillaging of a captured town or city.
(dated) (also sacque) A kind of loose-fitting gown or dress with sleeves which hangs from the shoulders, such as a gown with a Watteau back or sack-back, fashionable in the late 17th to 18th century; or, formerly, a loose-fitting hip-length jacket, cloak or cape.
(dated) A sack coat; a kind of coat worn by men, and extending from top to bottom without a cross seam.
“Workers remembered the privatisations, sackings, and attacks on social security and welfare.”
“It has been a year of poachings, price cuts, sackings, slanging matches and eye-wateringly large payoffs.”
“The mass sackings led to sympathy action by 1,000 British Airways ground staff and the halting of all BA flights at Heathrow Airport for more than 24 hours.”