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_{In the spirit of the What is a Word™/Phrase™ series started by JLee, a special brand of Phrase™ and Word™ puzzles.}

If a word conforms to a special rule, I call it a Workman Word™.

Use the examples below to find the rule.

$$
% set Title text. (spaces around the text ARE important; do not remove.)
% increase Pad value only if your entries are longer than the title bar.
%
defPad{P{0.0}} defTitle{textbf{ Workman }}
%
defS#1#2{Space{#1}{20px}{#2px}}defP#1{V{#1em}} defV#1{S{#1}{9}}
defT{Titletextbf{Words }^™Pad}defNT{Padtextbf{Not}T }displaystyle
smash{lower{29px}bbox[yellow]{phantom{rlap{rubio.2017.02.04}S{6px}{0}
begin{array}{cc}PadT&NT\end{array}}}}atopdefV#1{S{#1}{5}}
begin{array}{|c|c|}hlinePadT&NT\hline
%
text{ LONE}&text{ WOLF}\ hline
text{ FUEL }&text{ TANK}\ hline
text{ PEE}&text{ URINE}\ hline
text{ FUNNY}&text{ JOKE}\ hline
text{ CONVEYING }&text{ FEELINGS }\ hline
text{ THRASH}&text{ BIN}\ hline
text{ ENJOY}&text{ LIFE}\ hline
text{ INVOKE}&text{ SPELL}\ hline
text{ STRAW}&text{ LAST}\ hline
text{ HARD}&text{ CORE}\ hline
hline
end{array}$$

The CSV version:

Workman Words™,Not Workman Words™

LONE,WOLF

FUEL,TANK

PEE,URINE

FUNNY,JOKE

CONVEYING,FEELINGS

THRASH,BIN

ENJOY,LIFE

INVOKE,SPELL

STRAW,LAST

HARD,CORE

These are not the only examples of Workman Words™; many more exist.

What is the special rule these words conform to?

Hints:

I believe...

They're words that can be typed on keys touching one another in a Workman keyboard layout (Pic from Wikipedia):




In contrast, all the non-Workman words don't form an unbroken line on it.