The 1950s
Mr. Peepers
Our Miss Brooks
The Phil Silvers Show (service comedy)

The 1960s
The Andy Griffith Show (family-rural-workplace hybrid)
Car 54, Where Are You? (cop comedy)
The Dick Van Dyke Show (family-workplace hybrid)
The Bill Dana Show
Gomer Pyle, USMC (service comedy)
Get Smart (spy spoof)
F-Troop (comedy-western)
Hogan's Heroes (service comedy)

The 1970s
Sanford and Son (family-workplace hybrid)
Barney Miller (cop comedy)
Chico and the Man
Welcome Back, Kotter
Alice
CPO Sharkey (service comedy)
Carter Country

The 1980s
Benson
It's a Living
Newhart
Facts of Life
Sledge Hammer! (cop comedy)
Designing Women

The 1990s
Nurses
Wings
Spin City
Frasier (family-workplace hybrid)

1980"s

Benson
WKRP
Cheers
Newhart
it's A Living

1970s-early 80s
TAXI
WKRP IN CINCINATI

The 1950s
Our Miss Brooks
The Phil Silvers Show (service comedy)

The 1960s
Car 54, Where Are You? (cop comedy)
Gomer Pyle, USMC (service comedy)
Get Smart (spy spoof)
F-Troop (comedy-western)
Hogan's Heroes (service comedy)

The 1970s
Sanford and Son (family-workplace hybrid)
Barney Miller (cop comedy)
Chico and the Man
Welcome Back, Kotter
Alice
Carter Country

The 1980s
Benson
It's a Living
Newhart
Facts of Life
Night Court
Designing Women

The 1990s

Wings
Spin City
Frasier (family-workplace hybrid)
News Radio

The 2000's
Less Than Perfect (office comedy)

1970s

Barney Miller
WKRP
Mary Tyler Moore (work/home)
Bob Newhart Show (work/home)

1950s
The Ann Sothern Show
Private Secretary/Susie

1960s
Car 54, Where Are You?

1970s
Taxi (the first show I thought of)
The Lucy Show (when Lucy worked in the bank)

1980s
Designing Women
Night Court

1990s
Wings
Hey Dude
Just Shoot Me
Spin City (just the Michael J. Fox seasons)
The Steve Harvey Show
Veronica's Closet

2000s
Becker

I must be slow, because I am not getting what this post is about!!!

A few that haven't been mentioned yet:

1950's
The Bob Cummings Show (Love That Bob)

1960's
McHale's Navy

1970's
M*A*S*H
Here's Lucy

1990's
Murphy Brown

1980's - Frank's Place.

It only lasted a single season but it was fresh, funny, well written and acted.

I must be slow, because I am not getting what this post is about!!!

Comedies that featured workplace settings.

1960's - I Dream of Jeannie
1970's - Mary Tyler Moore
1980's - Cheers
1990's - Suddenly Susan
2000's - The Office