wrong genitive (e.g., 'employees's' instead of 'employee's')

When a group owns something, the apostrophe shows who owns it. Use employee's for one employee, employees' for more than one, and children's or men's for irregular plurals that don't end in s. Below are clear rules, many ready-to-copy fixes, and quick rewrites for work, school and casual writing.

Quick answer

Use employees' (apostrophe after the s) for possession by more than one employee. Use employee's (apostrophe + s) for one employee. Irregular plurals (children, men) take 's.

Multiple employees → the employees' parking spots
One employee → the employee's badge
Irregular plural → the children's toys

Core grammar: singular vs plural possessive

Two patterns cover most cases: singular nouns (and irregular plurals) take 's; regular plurals that already end in s take only an apostrophe after the s. Apply the pattern consistently.

Singular: add 's - boss → boss's; employee → employee's.
Plural ending in s: add apostrophe after the s - employees → employees'.
Plural not ending in s: add 's - children → children's.

Wrong: The employees's lunchboxes were left in the break room. -
Right: The employees' lunchboxes were left in the break room.
Wrong: The employee' badge was missing. -
Right: The employee's badge was missing.

Decision flow: three quick questions

Ask: 1) Is the possessor singular or plural? 2) If plural, does it end in s? 3) Would a rewrite improve clarity?

If singular → add 's (one boss → boss's).
If plural and ends in s → place apostrophe after s (two bosses → bosses').
If plural and doesn't end in s → add 's (children → children's).

Wrong: The bosses's decision was final. -
Right: The bosses' decision was final.
Note: collective nouns like staff can be treated as singular: The staff's opinion was divided.

Spacing and punctuation quirks

Never add spaces around an apostrophe. Punctuation follows normal rules: a period or comma comes after the final letter or apostrophe.

Correct: employees' -
Incorrect: employees ' or employees' .
Don't use an apostrophe to form a plural: 1990s, DVDs, MPs (not 1990's or DVD's).
Possessive + punctuation: The employees' meeting ended at 5 p.m.

Wrong: My boss 's email was odd. -
Right: My boss's email was odd.
Wrong: The 1990's music was fresh. -
Right: The 1990s music was fresh.

Hyphenated and compound nouns

For hyphenated compounds, pluralize the main noun then add the apostrophe: sister-in-law → sisters-in-law → sisters-in-law's.

Singular: sister-in-law → sister-in-law's.
Plural possessive: sisters-in-law → sisters-in-law's.
If it reads awkwardly, rewrite: The recipes of my sisters-in-law.

Example: Wrong: The reporters-in-chief's notes were missing. - Right (clearer): The notes of the reporters-in-chief.
Example: My sisters-in-law's recipes are famous. - this is correct but rewrite if preferred: The recipes of my sisters-in-law are famous.

Try your own sentence

Test the whole sentence rather than the phrase. Context often makes the correct form obvious.

Examples you can copy - work, school and casual

Common mistakes and fixes grouped by context. Copy the Right sentence when editing an email, report or assignment.

Work
Wrong: Please clear the employees's desks before Friday. -
Right: Please clear the employees' desks before Friday.
Wrong: The manager's and employees's opinions were recorded. -
Right: The manager's and employees' opinions were recorded.
Better: The team managers' meeting was postponed. (Or: The team's managers were supposed to meet.)
School
Wrong: The student's presentations were excellent. -
Right: The students' presentations were excellent. (if several students presented)
Wrong: Each students' name was called. -
Right: Each student's name was called.
Wrong: The childrens' artwork was displayed. -
Right: The children's artwork was displayed.
Casual
Wrong: The employees's group chat is loud. -
Right: The employees' group chat is loud.
Wrong: Alexs' bike is gone. -
Right: Alex's bike is gone.
Wrong: All of Chris' friends came over. -
Right: All of Chris's friends came over. (Either Chris' or Chris's is acceptable; pick one style and stay consistent.)

Rewrite help: fix your sentence in three quick ways

If a possessive looks awkward, try replacing the possessor, moving the phrase, or converting to an of-construction. Rewrites often improve clarity more than forcing a strange apostrophe pattern.

Test: swap the possessor for singular and plural forms to see which fits.
Move or invert the clause: Everyone was surprised by the bosses' decision.
Convert: The lounge for employees (instead of the employees' lounge) when a name gets clumsy.

Rewrite: The employees' lounge was renovated. → The lounge for employees was renovated.
Rewrite: The bosses' decision surprised everyone. → Everyone was surprised by the bosses' decision.
Rewrite: My sisters-in-law's recipes are famous. → The recipes of my sisters-in-law are famous.

Memory trick and quick heuristics

If the word is plural and already ends with s, keep the s and add the apostrophe after it. If the word is singular or an irregular plural, add 's.

Say it aloud: 'employees apostrophe' (employees') vs 'employee apostrophe s' (employee's).
Mnemonic: "S stays, apostrophe plays" - if plural ends in s, keep the s and add the apostrophe.
Heuristic: replace the possessor with "one person" and "many people" - whichever fits tells you which apostrophe to use.

Example: employees → many people, so write employees'.
Example: child → singular irregular, so write child's; children → children's.

Similar mistakes and quick fixes

Watch for contractions vs possessives, using apostrophes to form plurals, and joint vs separate ownership errors. Ask whether something is missing (contraction) or owned (possessive).

it's (it is) vs its (possessive): The company lost its files.
Don't use apostrophes to pluralize: DVDs, 1990s, MPs - not DVD's or 1990's.
Joint vs separate ownership: Bob and Mary's house (one house together) vs Bob's and Mary's houses (two houses).
Names ending in s: choose Charles's or Charles' and stay consistent with your style.

Wrong: Its a great idea. -
Right: It's a great idea. (contraction) or
Right: Its color is red. (possessive)
Wrong: The students's schedule was packed. -
Right: The students' schedule was packed.
Wrong: John and Mary's cars are new. - Right (if separate cars): John's and Mary's cars are new. - Right (if shared car): John and Mary's car is new.

FAQ

Should I write "employees" or "employees's"?

Write employees' for possession by more than one employee. employees's is incorrect because the plural already ends in s - place the apostrophe after the s.

Is "boss'" or "boss's" correct?

For one boss use boss's (the boss's office). For multiple bosses use bosses' (the bosses' office). Some style guides allow boss' for single names ending in s; pick a style and be consistent.

When do irregular plurals take 's?

Irregular plurals that don't end in s (children, men, women) take 's: children's, men's, women's.

Can I rewrite to avoid awkward possessives?

Yes. Rewrites using of (the lounge for employees) or moving clauses often improve clarity and are preferable in professional writing.

Will grammar checkers catch these errors?

Most tools flag common apostrophe mistakes and suggest corrections, but they can miss meaning (joint vs separate ownership). Use them, but also check the sentence's intended meaning.

Quick checklist before you hit send

1) Is the possessor singular or plural? 2) If plural, does it end in s? 3) If it still looks odd, rewrite with of or reorder the sentence. When unsure, run a grammar check and choose the rewrite that makes the meaning clearest.