I was thinking of the parody of "Dark As A Dungeon" about the secretary, but when I looked in the DT with an @parody @work search, I found 26 songs. I don't think any of them are the secretary song I was thinking of.
1) AUSTRALIA'S ON THE WALLABY
2) BALLAD OF PARKWAY PATRIOT
3) BANKS OF THE CONDAMINE
4) BLOW YE WINDS IN THE MORNING (II)
5) THE BOLD LIBRARIAN
6) THE C.I.O. SONG
7) CASEY JONES - UNION SCAB
8) THE COMMUTER'S CORONACH
9) CONESTOGA ON THE JORDAN ROAD
10) THE DRAPES OF ROTH
11) DUMP THE BOSSES OFF YOUR BACK
12) EVERY MAN
13) FAREWELL AND ADIEU
14) THE FOREMAN'S JOB
15) FOUR POUNDS A DAY
16) HENRY THE ACCOUNTANT
17) I'VE BEEN RAILING AT THE WORKLOAD
18) THE JOLLY GRINDER
19) THE PROGRAMMER'S LAMENT
20) ROCKABYE BABY
21) SKIVING
22) SPERRY RAND
23) TEAMING UP THE CARIBOO ROAD
24) TWAS EFFICIENT AND COST EFFECTIVE
25) WHAT A FRIEND WE HAS IN RHODA!
26) THE WORK OF THE LANDLORD